CN107574677B - A kind of preparation method of acupuncture regenerated leather for automotive trim epidermis - Google Patents
A kind of preparation method of acupuncture regenerated leather for automotive trim epidermis Download PDFInfo
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- CN107574677B CN107574677B CN201610506873.9A CN201610506873A CN107574677B CN 107574677 B CN107574677 B CN 107574677B CN 201610506873 A CN201610506873 A CN 201610506873A CN 107574677 B CN107574677 B CN 107574677B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention provides a kind of preparation method of the acupuncture regenerated leather for automotive trim epidermis, specific preparation process are as follows：(1) fiber opening mixes；(2) networking；(3) lapping；(4) pinprick reinforcement；(5) drying and sizing；(6) vacuum suction moulding.The present invention takes into full account requirement and professional standard of the automotive trim epidermis to material processability and mechanical property, reasonably optimizing raw material proportioning and production technology at the beginning of design, realizes the collaborative of composite Materials Design, preparation and processing and forming.Compared to the automotive trim epidermis such as traditional polyvinyl chloride, polyurethane, the automotive trim epidermis that the present invention is prepared has the advantages that excellent environmentally protective, free from extraneous odour, elasticity, moderate strength, comfortable feel and high performance-price ratio, suitable for large-scale industrial production.
Description
Technical field
The invention belongs to technical field of automotive trim, more particularly to a kind of acupuncture regenerated leather for automotive trim epidermis
Preparation method.
Background technology
With the emergence of social environment consciousness, numerous R＆D institutions and enterprise are begun attempt to the leftover pieces in leather industry
Re-use with the Leather Waste of recycling, i.e., collagen fabric is obtained using dry or wet technique or regenerated protein is fine
Dimension, with reference to textile technology or nonwoven techniques, prepares all kinds of textile cloths or regenerated leather.By taking ox-hide removes from office leftover pieces as an example, because difficult
Directly to make finished product, so being essentially all that kraft fibers are obtained by the way of mechanical crushing, in conjunction with glue spraying or addition
The techniques such as low melting point hot-melt adhesive fiber obtain be used in shoes and hats not high to deformation requirements etc., in, top layer and each plants case
The regenerated leather of bag internal layer.In general, the added value of product of this kind of Animal Skin regeneration leather is than relatively low.
In recent years, automobile industry development is rapid, and the total ownership of Global Auto reaches billions of, huge automotive trim epidermises
Demand the problems such as promoting people to focus more on its quality, economic and environment-friendly and recoverable.At present, automotive trim epidermis
Widely used polyvinyl chloride is just progressively substituted by the more environmentally-friendly material such as polyurethane.The volatilization loss rate of polyurethane epidermis
It is low, it is relatively more environmentally friendly without peculiar smell.However, polyurethane is equally very big and high-grade to the dependence of non-renewable resources
Polyurethane epidermis is expensive.
Acupuncture is a kind of very important dry non-woven technique, is had a wide range of application, and development is also comparatively ripe, can make
The larger non-woven fabrics of standby grammes per square metre.Patent document (the patent No.：CN01113748.7 a kind of manufacture method of regenerated leather) is disclosed, its
Technique is：Hide fiber is peeled off and produced, and is added thermosetting chemical fibre and is mixed, lapping, and acupuncture is pre- solid, hot melt adhesive, extrusion and cooling.This
Kind process has the advantages that pollution-free, low energy consumption, high quality than traditional wet processing.The drawback is that：Used in case
Networking is combed, and peels off that the animal hide fiber proportion produced is small, and length is short and discreteness is big, and obvolvent is not easy between fiber, when adopting
When Animal Skin fiber content is higher, using the combing more difficult uniform networking of mode；Using polypropylene fibre as thermosetting chemical fibre,
In reflow process, such low melting point homogeneous synthetic fibers under the action of surface tension can collapsing into microspheres one by one,
Bond effect is greatly lowered, and when content reaches 30%, the elasticity of regenerated leather can substantially reduce, and lose corium feel.
The content of the invention
For above-mentioned prior art deficiency, the present invention provides a kind of one strata ammonia of surface recombination for automotive trim epidermis
The production method of the Animal Skin regeneration leather of ester film.The present invention fully takes into account automotive trim epidermis and its extraordinary production technology
Requirement to material mechanical performance and processability, realizes the collaborative of design of material, preparation and processing and forming.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of preparation method of acupuncture regenerated leather for automotive trim epidermis, preparation process are as follows：
(1) fiber opening mixes：By animal hide fiber prepared by the waste and old Animal Skin by recycling or animal hide offal with
Skin-core structure thermoplastic synthetic fiber distinguishes precise, and opener is sent under conditions of substantially dry and is mixed together shredding,
Thick shredding and smart shredding are carried out successively.
(2) networking：The mixed uniformly fiber obtained to step (1) carries out networking, it is described into net mode be air-flow
Networking combs networking.
(3) lapping：One layer of continuous thin layer skin-core structure thermoplastic synthetic fiber's felt is laid with output curtain in advance, is used
Cross-lapped mode carries out lapping on thin layer skin-core structure thermoplastic synthetic fiber's felt, by varying lapping carriage
The speed of different sections of highway is than obtaining the uniform fibre web of grammes per square metre in single direction stroke.
(4) pinprick reinforcement：The fibre web completed to step (3) carries out pre-needling first, then carries out 3~4 main acupunctures again.
(5) drying and sizing：Drying is carried out using cylinder airflow dryer to the fibre web after step (4) pinprick reinforcement to determine
Type, then trimming winds removes from office up to continuous band-shaped Animal Skin regeneration.
(6) vacuum suction moulding：The continuous band-shaped Animal Skin regeneration leather and polyurethane film that step (5) is obtained
Parallel exhibition material is carried out in vacuum forming device Zhong Zhanliao areas, needs progress local according to the deformation of different parts in heating zone
Isothermal does not heat, and the edge of continuous band-shaped Animal Skin regeneration leather and polyurethane film is fixed in shaping area, carries out vacuum suction
Modeling, regenerated leather and polyurethane film are made under the collective effect of heat and power while bonding is with being molded, after cooling and shaping, cuts interior trim table
Skin simultaneously winds waste material.
Preferably, for Animal Skin fibre length described in step (1) between 5~30mm, longer fiber can assign product
The Animal Skin fiber requirements of good intensity and kishke feel, wherein length more than 8mm account for animal hide fiber total amount
More than 75%；It is further preferred that the animal hide fiber is kraft fibers；
In view of pure Animal Skin regeneration leather is difficult to the processability requirement for meeting that automotive trim epidermis is higher, one-component is low
The bond effect of fusing point heat-bondable fibre is again relatively poor, takes into account automotive trim epidermis to material mechanical performance and processability
Basic demand, the present invention introduce suitable skin-core structure thermoplastic synthetic fiber in the design of material stage.Preferably, step (1)
Described in skin-core structure thermoplastic synthetic fiber for 4080 fibers with skin-core structure, N720 fiber types, ES fibers.It is required that its
Cortex fusing point is at least 20 DEG C lower than sandwich layer fusing point；Cortex fusing point will also be less than the aging temperature of animal hide fiber.Further preferably
, skin-core structure thermoplastic synthetic fiber described in step (1) is 4080 fibers with skin-core structure.4080 fibrocortexs are
The copolyester with low melting point of weight 50% is accounted for, fusing point is 72 DEG C；Sandwich layer is the semi-dull polyester that fusing point is 250 DEG C.At 110~130 DEG C
Between, 4080 fibrocortexs melt substantially, but not as one pack system low-melting point hot adhesion fiber (such as polypropylene fibre)
Collapsing phenomenon is produced, its sandwich layer remains to keep threadiness.By needling process, the thermoplastic synthetic fiber of skin-core structure and animal
Hide fiber mutually winds composition three-dimensional net structure, under the collective effect of higher temperature and vacuum forming power, passes through core-skin knot
The cortex melting phorogenesis of the thermoplastic synthetic fiber of structure assigns is difficult to the Animal Skin fibre prickling being plastically deformed again at room temperature
Raw leather is with plastic deformation ability.
Preferably, substantially dry described in step (1) refers to that the water content of the animal hide fiber is 10%~25%, into
One step is preferable, and the water content is 15%.If moisture is less than 10%, animal hide fiber is relatively dry, embrittlement, is mixing
A large amount of dust can be produced in opening processes, it is larger to contamination.If water content is higher than 25% in animal hide fiber,
It is difficult full and uniform mixing between fiber, causes production efficiency low, can also extra consumption substantial amounts of time and the energy.
Preferably, the proportion of fibers described in step (1) is：75~88 parts of animal hide fiber, the synthesis of skin-core structure thermoplasticity
12~25 parts of fiber.Research shows, if thermoplastic synthetic fiber's content of such skin-core structure is less than 12 parts, on the one hand, whole
The mechanical property of material is difficult to ensure that (tearing strength substantially reduces), and the place of large deformation is needed in subsequent forming processing, and have can
It can be torn；On the other hand, the skin-core structure thermoplastic synthetic fiber's content directly contacted with animal hide fiber is relatively low, certain
Under temperature and pressure, can directly sliding motion fiber content also just it is relatively low so that the heat deformability of material is had a greatly reduced quality, i.e.,
The place that protrusion angle of automotive trim epidermis etc. needs complex three-dimensional to deform in subsequent forming processing is likely to occur fold.And work as
When thermoplastic synthetic fiber's content of skin-core structure is more than 25 parts, although material mechanical performance and processability are guaranteed,
Be whole material the loss of corium texture it is serious.Accordingly, it is considered to the functional requirement of product, take into account material mechanical property and into
Type performance, is set to 12~25 parts by thermoplastic synthetic fiber's content of skin-core structure.
In view of the mechanical obtained Animal Skin fibre length of defibering is usually shorter, its to having special requirement into net mode,
Preferably, it is air lay into net mode described in step (2).
Preferably, the continuous skin-core structure thermoplastic synthetic fiber felt being laid with advance on output curtain described in step (3)
Thickness be 30~100 μm.
Preferably, lapping carriage single direction stroke in step (3) is divided into five sections, length ratio is followed successively by 1:2:4:2:1, it is right
The lapping carriage speed ratio answered is 1.12:1.06:1:1.06:1.12, uneven rate≤5% of gained fibre web grammes per square metre, can effectively solve
The problem of intermediate thin both ends caused by certainly traditional lapping mode are thick.
Preferably, pre-needling described in step (4) uses mixed and disorderly cloth pin mode, 3000~4500 pieces/m of cloth pin density, pin
Frequency is 450~650 thorns/min, and depth of needling is 9~14mm.Fully to be reinforced to fibre web, main acupuncture area is using 3~4 double plates
Lower thorn machine, 350~500 thorns of needling density/cm2, 5~12mm of depth of needling.
Preferably, on the one hand the drying temperature of cylinder airflow dryer described in step (5) can be eliminated at 110~140 DEG C
Pricker improves regenerated leather density, increases dimensional stability to stress caused by fibre web impact；On the other hand make skin-core structure hot
Partial melting, the preliminary mechanical property for improving regenerated leather occur for plasticity synthetic fibers cortex.Animal Skin regeneration after drying
Remove from office thickness 1.0mm~1.4mm.
Preferably, step (6) described polyurethane film is commonly used for 0.2~0.4mm of thickness, broad-adjustable automotive trim epidermis
Water-based thermoplastic polyurethane.Under certain temperature and vacuum forming power, one part can be penetrated between the network of acupuncture assorted fibre
Gap, forms one layer of interpenetrating networks transition layer structure between, in addition, the thickness of 0.2~0.3mm is used in female mould forming
Open up lower required lines.
During step (6) vacuum suction moulding, using female mould forming technique or male mould forming technique：Using former into
During type technique, polyurethane film is directly contacted with metal die, and lower required lines is opened up on the surface of polyurethane film；Using male mould forming
When, Animal Skin regeneration leather is directly contacted with mould, and polyurethane film itself carries required lines.
Need according to plastic uptake mode, to determine the levels of above-mentioned acupuncture regenerated leather and polyurethane film before the parallel exhibition material
Locus.The acupuncture regenerated leather of above-mentioned preparation is as B faces (side directly contacted with automotive trim structural member)；Polyurethane
Film is as A faces (side directly contacted with passenger).The two opens up material at the same time, is bonded to each other, parallel to enter heating zone.If A faces
Using waterproof and breathable thermoplastic polyurethane film, before the two fits into heating zone, can optionally spray between
Suitable green bacteria remover, such as the boundless silver ion of application prospect instantly, to obtain with long-acting from degerming functions
Automotive trim epidermis.It should be noted that：Ensure any material added in production process, cannot all destroy Animal Skin fibre
The structure and physical property of dimension, can not chemically react with skin-core structure thermoplastic synthetic fiber.
Allowance for shrinkage should be reserved to above-mentioned acupuncture regenerated leather according to specific automotive upholstery size when parallel exhibition material,
The linear shrinkage of usual such regenerated leather is 10%.
Isothermal heating is realized by the heating zone of vacuum forming equipment to the part.Heating zone is by 200~300 pieces
Heating brick is formed, and upper strata is with each half of lower floor into two-dimensional rectangle array arrangement, and preforming material is from centre by the way that every piece of heating brick can
With independent temperature control, heating zone actual temperature scope is 110 DEG C~140 DEG C.By rationally setting heating-up temperature parameter, can meet
The different distortion demand of automotive trim different parts.
The bonding is carried out at the same time with shaping, refer to from the preforming material that heating zone comes out fix behind periphery-
Under the plastic uptake power of 0.07~-0.098MPa, there is the side of thin layer skin-core structure thermoplastic synthetic fiber's felt in acupuncture regenerated leather
Be in contact with polyurethane film (heat and power collective effect under, the two bond effect is fine) pasted while bonding is interpenetrated
Shape needed for molding tool formation.Following peripheral is cut out after cooling, is wound leftover pieces, is removed molded part.
The invention also discloses the acupuncture regenerated leather for automotive trim epidermis that above-mentioned preparation method is prepared.
Automotive trim epidermis of the present invention includes automotive instrument panel skins, door shield epidermis, column trim panel skin and gusset
Trim panel skin.
The beneficial effects of the invention are as follows：
(1) present invention effectively utilizes the waste and old Animal Skin and animal hide offal of recycling again, not only improves
The added value of product of animal hide fiber, greatly enriches the classification of regenerated leather product, and reduce to oil and coal etc.
The dependence of non-renewable fossil resource, is conducive to environmental protection.
(2) animal hide fiber forms the three-dimensional structure of densification, class is formed in institutional framework under the puncture repeatedly of pricker
The cross structure of dermal collagen tissue is similar to, the mechanicalnesses such as Animal Skin fiber texture, malleable, relative hardness can be strengthened
Can, it is allowed to be more suitable for making automotive trim epidermis.
(3) Animal Skin regeneration leather assigns automotive trim epidermis good corium texture, and polyurethane assigns automotive trim
The good feel of epidermis, the combination of both meet the comfortable and environmentally protective development trend of automotive safety and people to life product
Matter and the pursuit of personalization.
(4) appropriate thermoplastic polyurethane film is selected, in the exhibition material fitting parallel with polyurethane of Animal Skin regeneration leather
Before, in optionally spraying appropriate green bacteria remover therebetween, acquisition can be long-acting from degerming automotive trim epidermis.
(5) since automotive trim epidermis is the important component of automotive trim, to material aesthetics, malleable, opposite
The physics and chemistry such as hardness mechanical performance has particular/special requirement, therefore the present invention just takes into full account automotive trim epidermis to material at the beginning of design
Expect requirement and the professional standard of processability and mechanical property, reasonably optimizing raw material proportioning and production technology, realize composite wood
The collaborative of material design, preparation and processing and forming.Compared to the automotive trim epidermis such as traditional polyvinyl chloride, polyurethane, gained
Automotive trim epidermis has the advantages that excellent environmentally protective, free from extraneous odour, elasticity, moderate strength, comfortable feel and high performance-price ratio.
Brief description of the drawings
Fig. 1 is the process units of the Animal Skin fibre prickling regenerated leather of one layer of polyurethane film of surface recombination of the present invention
And production process schematic diagram.
Fig. 2 is pinprick reinforcement process schematic.
In Fig. 1,101. openers mix, 102. conveyer belts, 103. cylinders, 104. wind wheels, 105. air passages, and 106.
Solidifying lace curtaining, 107. aspiration columns, 108. cross-lapped devices, 109. air-flows institute is into fibre web, and 110. lapping carriages, 111. is advance
The thin layer skin-core structure synthetic fibers felt of laying, 112. pre-needlings, 113. main acupunctures, 114. pairs of rotary screen dryers, 115. vacuum
Plastic uptake device.
In fig. 2,201. it is fed for curtain, 202. stripping web plates, 203. trawl boards, 204. needle plates, 205. needle beams, 206. prickers,
207. final drive shafts, 208. outlet rollers.
Embodiment
Below by specific implementation case and the present invention will be further elaborated with reference to attached drawing, it should explanation,
The following description is only intended to explain the invention, its content is not defined.
Embodiment 1
(1) kraft fibers and 4080 fibers are got out, each difference precise 60Kg and 12Kg, shredding is sent into after mixing
Machine, carries out thick shredding and smart shredding respectively.
(2) composite fibre is fed, carries out air lay.It is laid with 4080 fibers of 50 μm of a layer thickness in advance on output curtain
Felt, then carries out cross-lapped on the fibrofelt.Lapping carriage single direction stroke is divided into five sections, length ratio is followed successively by
1:2:4:2:1, corresponding lapping carriage speed ratio is 1.12:1.06:1:1.06:1.12.
(3) as shown in Fig. 1 112, pre-needling, 4000 pieces/m of cloth pin density or so, pin frequency are first carried out to the fibre web completed
For 500 thorns/min, depth of needling 12mm.Fully to be reinforced to fibre web, 113 position in Fig. 1, using under 3~4 double plates
Thorn machine.First needling density 350 pierces/cm2, depth of needling 9mm；Second needling density 400 pierces/cm2, depth of needling 8mm；
3rd needling density 450 pierces/cm2, depth of needling 6mm；4th needling density 450 pierces/cm2, depth of needling 5mm.
(4) drying sizing, drying temperature 110 are carried out to the fibre web after pinprick reinforcement using double cylinder airflow dryers
DEG C, then trimming is wound.
(5) it is 1m by the regeneration of continuous band-shaped acupuncture kraft fibers of above-mentioned gained/4080 leather and width, thickness 0.3mm
The parallel exhibition material of polyurethane film, be then sent to heating zone, need to set heating parameters according to local deformation and carry out part
Isothermal does not heat.The regeneration leather of the different polyurethane film of local softening degree and the kraft fibers shunk/4080 is sent into
Shaping area, fixes edge of materials, carries out plastic uptake under the plastic uptake power of -0.07MPa, two kinds of materials be carried out at the same time bond and into
Type, cuts periphery and winds leftover pieces.When automotive trim epidermis be cooled to 50 DEG C and it is following when feeding.So far, automotive trim table
Leather is standby to be completed.
Compliance test result：According to《Automobile polyvinyl chloride slush moulding instrument panel surfaces performance and detection》Professional standard is to the present embodiment
The automotive trim epidermis that is prepared carries out physics and chemistry mechanical performance detection, vertically and horizontally tensile strength be respectively 15.5MPa,
16.4MPa, vertically and horizontally elongation at break is respectively 285%, 280%, and shore hardness (A) is 80.Result of the test shows, of the invention
The automotive trim epidermis physics and chemistry mechanical performance index being prepared meets or exceeds the sector standard.
Embodiment 2
(1) kraft fibers and N720 fibers are got out, each difference precise 80kg and 12kg, shredding is sent into after mixing
Machine, carries out thick shredding and smart shredding respectively.
(2) composite fibre is fed, carries out air lay.Be laid with 100 μm of a layer thickness in advance on output curtain 4080 are fine
Felt is tieed up, cross-lapped is then carried out on the fibrofelt.Lapping carriage single direction stroke is divided into five sections, length ratio is successively
For 1:2:4:2:1, corresponding lapping carriage speed ratio is 1.12:1.06:1:1.06:1.12.
(3) as shown in Fig. 1 112, pre-needling, 3000 pieces/m of cloth pin density or so, pin frequency are first carried out to the fibre web completed
For 600 thorns/min, depth of needling 9mm.Fully to be reinforced to fibre web, 113 position in Fig. 1, using under 3~4 double plates
Thorn machine.First needling density 400 pierces/cm2, depth of needling 9mm；Second needling density 420 pierces/cm2, depth of needling 8mm；
3rd needling density 450 pierces/cm2, depth of needling 6mm；4th needling density 500 pierces/cm2, depth of needling 5mm.
(4) drying sizing, drying temperature 140 are carried out to the fibre web after pinprick reinforcement using double cylinder airflow dryers
DEG C, then trimming is wound.
(5) it is 1m by the continuous band-shaped acupuncture kraft fibers of above-mentioned gained/N720 regenerations leather and width, thickness 0.3mm
The parallel exhibition material of polyurethane film, be then sent to heating zone, need to set heating parameters according to local deformation and carry out part
Isothermal does not heat.The different polyurethane film of local softening degree and the kraft fibers shunk /N720 regenerations leather are sent into
Shaping area, fixes edge of materials, carries out plastic uptake under the plastic uptake power of -0.095MPa, two kinds of materials be carried out at the same time bond and into
Type, cuts periphery and winds leftover pieces.When automotive trim epidermis be cooled to 50 DEG C and it is following when feeding.So far, automotive trim table
Leather is standby to be completed.
Compliance test result：According to《Automobile polyvinyl chloride slush moulding instrument panel surfaces performance and detection》Professional standard is to the present embodiment
The automotive trim epidermis that is prepared carries out physics and chemistry mechanical performance detection, vertically and horizontally tensile strength be respectively 15.2MPa,
15.6MPa, vertically and horizontally elongation at break is respectively 292%, 290%, and shore hardness (A) is 75.Result of the test shows, of the invention
The automotive trim epidermis physics and chemistry mechanical performance index being prepared meets or exceeds the sector standard.
Although above-mentioned be described the embodiment of the present invention in conjunction with the embodiments, not the present invention is protected
The limitation of scope, those skilled in the art should understand that, on the basis of technical scheme, those skilled in the art
The various modifications that can be made or deformation need not be made the creative labor still within protection scope of the present invention.
Claims (13)
1. the preparation method of a kind of acupuncture regenerated leather for automotive trim epidermis, it is characterised in that preparation process is as follows：
（1）Fiber opening mixes：Animal hide fiber and core-skin prepared by the waste and old Animal Skin by recycling or animal hide offal
Structure thermoplastic's synthetic fibers distinguish precise, and opener is sent under conditions of substantially dry and is mixed together shredding, successively
Carry out thick shredding and smart shredding；
（2）Networking：To step（1）Obtained mixed uniformly fiber carries out networking, it is described into net mode be air lay or comb
Manage networking；
（3）Lapping：One layer of continuous thin layer skin-core structure thermoplastic synthetic fiber's felt is laid with output curtain in advance, using intersection
Fold lapping mode and carry out lapping on thin layer skin-core structure thermoplastic synthetic fiber's felt, by varying lapping carriage in list
Into stroke, the speed of different sections of highway is than obtaining the uniform fibre web of grammes per square metre；
（4）Pinprick reinforcement：To step（3）The fibre web completed carries out pre-needling first, then carries out 3 ~ 4 main acupunctures again；
（5）Drying and sizing：Using cylinder airflow dryer to step（4）Fibre web after pinprick reinforcement carries out drying sizing, so
Trimming winds afterwards removes from office up to continuous band-shaped Animal Skin regeneration；
（6）Vacuum suction moulding：By step（5）The obtained continuous band-shaped Animal Skin regeneration is removed from office with polyurethane film true
Suction molding apparatus Zhong Zhanliao areas carry out parallel exhibition material, need progress is local to differ according to the deformation of different parts in heating zone
Temperature heating, the edge of continuous band-shaped Animal Skin regeneration leather and polyurethane film is fixed in shaping area, carries out vacuum forming,
Make regenerated leather and polyurethane film under the collective effect of heat and power while bonding is with being molded, after cooling and shaping, cutting interior trim epidermis is simultaneously
Wind waste material.
A kind of 2. preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 1, it is characterised in that
Step（1）Described in Animal Skin fibre length between 5 ~ 30mm, wherein length is accounted for more than the Animal Skin fiber requirements of 8mm
To more than the 75% of animal hide fiber total amount；
Step（1）Described in skin-core structure thermoplastic synthetic fiber for 4080 fibers with skin-core structure, N720 fiber types and
ES fibers；
Step（1）Described in substantially dry refer to the animal hide fiber water content be 10% ~ 25%；
Step（1）Described in proportion of fibers be：75 ~ 88 parts of animal hide fiber, skin-core structure thermoplastic synthetic fiber 12 ~ 25
Part.
A kind of 3. preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 2, it is characterised in that
The animal hide fiber is kraft fibers.
A kind of 4. preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 2, it is characterised in that
The skin-core structure thermoplastic synthetic fiber is 4080 fibers with skin-core structure.
A kind of 5. preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 2, it is characterised in that
The substantially dry refers to that the water content of the animal hide fiber is 15%.
A kind of 6. preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 1, it is characterised in that
Step（2）Described in into net mode be air lay.
A kind of 7. preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 1, it is characterised in that
Step（3）Described in it is advance output curtain on be laid with one layer of continuous skin-core structure thermoplastic synthetic fiber's felt, its thickness be 30 ~
100μm；
By step（3）Middle lapping carriage single direction stroke is divided into five sections, and length ratio is followed successively by 1:2:4:2:1, corresponding lapping is small
Vehicle speed ratio is 1.12:1.06:1:1.06:1.12.
A kind of 8. preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 1, it is characterised in that
Step（4）Described in pre-needling use mixed and disorderly cloth pin mode：3000 ~ 4500 pieces/m of cloth pin density, pin frequency for 450 ~ 650 thorn/
Min, depth of needling are 9 ~ 14mm；Main acupuncture area uses and pierces machine, 350 ~ 500 thorns of needling density/cm under 3 ~ 4 double plates2, acupuncture depth
Spend 5 ~ 12mm.
A kind of 9. preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 1, it is characterised in that
Step（5）The drying temperature of the cylinder airflow dryer is at 110 ~ 140 DEG C.
10. a kind of preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 1, its feature exist
In step（6）Described in polyurethane film for 0.2 ~ 0.4mm of thickness, the common water-based thermoplastic of broad-adjustable automotive trim epidermis
Property polyurethane；
Step（6）Described in vacuum suction moulding during, using female mould forming technique or male mould forming technique：Using former
During moulding process, polyurethane film is directly contacted with metal die, and lower required lines is opened up on the surface of polyurethane film；Using male mould forming
During technique, Animal Skin regeneration leather is directly contacted with mould, and polyurethane film itself carries required lines；
Needed before the parallel exhibition material according to plastic uptake mode, determine the sheaf space up and down of the acupuncture regenerated leather and polyurethane film
Position：The side that the acupuncture regenerated leather is directly contacted as B faces with automotive trim structural member；Polyurethane film is as A faces
The side directly contacted with passenger, the two opens up material, is bonded to each other at the same time, parallel to enter heating zone；
When A faces use waterproof and breathable thermoplastic polyurethane film, before the two fits into heating zone, spray between
Green bacteria remover；
The part not by the heating zone of vacuum forming equipment realized by isothermal heating：Heating zone is made of 200 ~ 300 pieces of heating bricks,
Upper strata and each half of lower floor into two-dimensional rectangle array arrangement, preforming material from centre by, every piece of heating brick can independent temperature control,
Heating zone actual temperature scope is 110 ~ 140 DEG C；
The bonding be carried out at the same time with shaping specifically refer to from the preforming material that heating zone comes out fix periphery after -0.07
Under the plastic uptake power of ~ -0.098MPa, there are the side of thin layer skin-core structure thermoplastic synthetic fiber's felt and poly- ammonia in acupuncture regenerated leather
Ester film is in contact, and realizes bonding and shaping at the same time on mould.
11. a kind of preparation method of acupuncture regenerated leather for automotive trim epidermis as claimed in claim 10, its feature exist
In the green bacteria remover is silver ion bacteria remover.
12. a kind of acupuncture regenerated leather for automotive trim epidermis, it is characterised in that prepared by claim 1-11 any one
Method is prepared.
A kind of 13. acupuncture regenerated leather for automotive trim epidermis as claimed in claim 12, it is characterised in that the automobile
Interior trim epidermis includes automotive instrument panel skins, door shield epidermis, column trim panel skin and gusset trim panel skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610506873.9A CN107574677B (en) | 2016-06-30 | 2016-06-30 | A kind of preparation method of acupuncture regenerated leather for automotive trim epidermis |
Applications Claiming Priority (1)
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| CN109174904A (en) * | 2018-08-21 | 2019-01-11 | 陆海波 | A kind of waste disposal processing technology |
| CN110016764A (en) * | 2019-04-27 | 2019-07-16 | 泉州伟明工贸有限公司 | A kind of ox-hide regenerated fiber synthetic leather preparation method |
| IT202100009206A1 (en) * | 2021-04-13 | 2022-10-13 | Chiorino Tech S P A | NON-WOVEN FABRIC FROM WASTE OF TANNED LEATHER AND METHOD FOR ITS PRODUCTION |
| CN114561746B (en) * | 2022-01-07 | 2023-04-21 | 成都众信塑胶有限责任公司 | Manufacturing method of animal fiber composite full-layer leather |
| CN115029937A (en) * | 2022-06-24 | 2022-09-09 | 上海永利输送***有限公司 | Method for manufacturing light-permeable conveying belt containing fabric |
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| CN101851863B (en) * | 2010-06-08 | 2011-12-07 | 福建南纺股份有限公司 | Environmentally friendly differential fiber non-woven automotive interior trim material and preparation method thereof |
| CN103437069A (en) * | 2013-09-06 | 2013-12-11 | 天津工业大学 | Production method of sea-island type superfine fiber artificial leather base cloth |
| CN105064050B (en) * | 2015-08-07 | 2017-10-27 | 无锡双象超纤材料股份有限公司 | A kind of preparation method of anti-graffiti super fiber leather |
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