CN101519514A - Obstructing sheet and fruit cup - Google Patents
Obstructing sheet and fruit cup Download PDFInfo
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- CN101519514A CN101519514A CN200910131618A CN200910131618A CN101519514A CN 101519514 A CN101519514 A CN 101519514A CN 200910131618 A CN200910131618 A CN 200910131618A CN 200910131618 A CN200910131618 A CN 200910131618A CN 101519514 A CN101519514 A CN 101519514A
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Abstract
The invention discloses an obstructing sheet and a fruit cup. The obstructing sheet comprises the following integrants by weight: 80 parts to 91 parts of polypropylene, 5 parts to 6 parts of ethylene and vinyl alcohol polymer (EVOH) and 3 parts to 4 parts of adhesive. The invention also discloses the fruit cup made of the obstructing sheet. The obstructing sheet can be made into high-transparency obstructing sheets, transparent obstructing sheets, outdoor obstructing sheets and cold-resistant obstructing sheets, can be used for producing sheets for various purposes, and five-layer sheets and seven-layer sheets, has an unique package technology so as to reduce the consumption of the EVOH and the adhesive and decrease the cost, and uses an asymmetry obstructing sheet technology to reduce the consumption of the EVOH by 15 percent.
Description
Technical field
The present invention relates to a kind of obstruct sheet material that is used to prepare the fruit cocktail product, and the fruit cocktail of making of this obstruct sheet material.
Background technology
Usually the material barrier that we said is all at specific infiltration object, the infiltration object comprises common gas, water vapour, liquid, organism etc., is that material is permeated by arriving the barrier property of opposite side (generally being to enter the lower concentration side by the infiltration of high density side by material) by the one side specific infiltration object.Whole process of osmosis can be divided into absorption, dissolving, diffusion, desorb several sections, and gas or water vapour enter material surface from high concentration region, by the diffusion at material internal, again from another surface desorption of low concentration region.Zheng Seepage sees through the speed that journey occurs and determine by two factors, and the one, in polymkeric substance, permeate the dissolved speed, represent by solubility parameter; The 2nd, the speed that the penetrant molecule moves in polymeric matrix is represented by spread coefficient.
And the requirement that should satisfy as the wrapping material of making fruit cocktail: because oxygen can cause fat and proteinic deterioration by oxidation, so the ability of the blocking oxygen of excellence will be arranged; Because of the entering or volatilize and to cause the variation of food taste of steam, must have excellent water vapour obstructing capacity; For preventing that peculiar smell from entering or the volatilization of fragrance, guarantee the food original flavor, need the ability of excellent obstruct fragrance; For satisfying the needs of airtight preservation, good heat sealability be arranged; Satisfy germ-resistant requirement, avoid microbial destruction food, have certain resistance toheat; For the needs attractive in appearance and information that commodity are necessary of decorateing, good printing be arranged; Be protection food, satisfy the needs of carrying and transportation, must have stronger mechanical property; The requirement of other some optical property aspects etc.
Summary of the invention
The purpose of this invention is to provide a kind of obstruct sheet material that is used to prepare the fruit cocktail product, have the very excellent transparency, glossiness, physical strength, retractility, wear resistance, winter hardiness and surface strength.
For achieving the above object, technical scheme provided by the present invention is: a kind of obstruct sheet material includes the following respectively composition of parts by weight: polypropylene 80-91, ethylene/vinyl alcohol copolymer 5-6, glue 3-4.
This barrier material also includes the transparent master batch that parts by weight are 3-5.
This barrier material also includes the uvioresistant master batch that parts by weight are 2-5.
This barrier material also includes the polyethylene that parts by weight are 5-10.
The present invention also provides a kind of usefulness fruit cocktail that above-mentioned barrier flaps material is prepared from.
This fruit cocktail includes two layers of polypropylene, two-layer glue and one deck ethylene/vinyl alcohol copolymer, described polypropylene layer and glue-line are located at the both sides of ethylene/vinyl alcohol copolymer layer respectively, and described glue-line is fixed together polypropylene layer and ethylene/vinyl alcohol copolymer layer.
The waste recovery layer that this fruit cocktail produces when also including the two sheets thermoforming, described recovery layer is located between polypropylene layer and the glue-line.
The advantage that the present invention has: the present invention intercepts sheet material can make high transparent obstructive sheet material, transparent obstructive sheet material, outdoor obstruct sheet material and the cold-resistant sheet material that intercepts, production is applicable to multi-purpose sheet material, can produce five layers and seven synusia materials, unique bound edge technology, can save ethylene-vinyl alcohol copolymer (EVOH) and glue consumption, reduce cost.Use asymmetric obstruct sheet technology simultaneously, reduced the consumption of EVOH about 15%.
Description of drawings:
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, but content of the present invention be not limited to for embodiment.
Fig. 1 is the structural representation of fruit cocktail of the present invention.
Embodiment:
A kind of high transparent obstructive sheet material is selected high transparent novel forming grade polypropylene (PP) for use, the new E VOH of high transparent.
Wherein the weight percentage of each composition is respectively: PP is 86-89%, and transparent master batch is 3-5%, and EVOH-J171B is 5%, and glue QB515 is 3-4%.
A kind of transparent obstructive sheet material is selected novel forming level PP for use, has increased recovery layer, requires to determine the ratio of reclaimed materials according to different transparencies, and adds modified additive, can improve the transparency and improve the sheet material quality.
Wherein the weight percentage of each composition is respectively: PP is 90-91%, and EVOH-171B is 6%, and glue QB515 is 3-4%.
A kind of outdoor intercepts sheet material, selects wire drawing level PP for use, adds two class modified additives, can be out of doors and some particular surroundings life-time service, can also add the reclaimed materials of 10-30%, and reduce cost.
Wherein the weight percentage of each composition is respectively: PP is 85-89%, and the UV master batch is 2-5%, and EVOH-J171B is 6%, and glue QB515 is 3-4%.
A kind of cold-resistant obstruct sheet material: use me to take charge of the PP (polypropylene) of modification, can be at the low temperature environment life-time service.
Wherein the weight percentage of each composition is respectively: PP is 80-86%, and polyethylene (PE) is 5-10%, and EVOH-J171B is 6%, and glue QB515 is 3-4%.
Embodiment 5
A kind of asymmetric obstruct sheet material, because EVOH is very responsive to water content, along with its barrier property of increase of water content reduces rapidly, and in food product containers (as fruit can) inner water content apparently higher than the outside, so improve the consumption that the thickness of PP can improve effective reduction EVOH, reduce the cost of sheet material.
A kind of fruit cocktail as shown in Figure 1, the multilayer high-barrier sheet material that mainly uses seven synusia material machines to produce, its material structure from inside to outside and acting as:
Two outermost layers are polypropylene layer 1, because the resistance oxygen of EVOH increases and reduces rapidly with humidity, the PP layer can protect EVOH to contact with airborne steam, and EVOH is in very under the low humidity for a long time.
The layer adjacent with PP layer 1 is two-layer recovery layer 2, and this recovery layer 2 is that a large amount of wastes compressions that produce when utilizing sheet heat forming form, and can effectively reduce cost.
Between recovery layer 2 and evoh layer 4 (evoh layer) two-layer glue-line 3 is arranged, evoh layer 4 and recovery layer 2 are used to bond; Because the intermiscibility of EVOH and PP is very poor, glue-line 3 can well bond EVOH and PP.
Innermost layer is an evoh layer 4, and for intercepting the major function layer of sheet material, effectively blocking oxygen plays freshening effect.
This product is realized by the adjusting of recovery layer 2, PP layer 1 and evoh layer 4 raw material types, proportioning and thickness, can be realized requirements such as high transparent, high rigidity, high heat resistance and low cost respectively.
Fruit cocktail formula for a product principle of design of the present invention:
1, barrier: the fruit cocktail general requirement was guaranteed the quality about 12-15 month, and wherein the content of EVOH is to the influence (with the orange is experimental subjects, 3 months high temperature accelerated tests) of quality guaranteed period as shown in Table 1:
Table one EVOH (ethylene-vinyl alcohol copolymer) content and the relation of quality guaranteed period
| EVOH (ethylene-vinyl alcohol copolymer) content (%) | 4 | 5 | 6 | 7 |
| Quality guaranteed period (moon) | 9 | 13 | 15 | 18 |
The result considers cost factor simultaneously by experiment, determines that EVOH content is at 5-6%.
2, the transparency: EVOH content has certain influence to transparency, content low transparency more is good more, high transparent obstructive sheet material formula is enhanced the transparency by using less EVOH content and adding transparent master batch mode, the transparency of fundamental sum random copolymerization PP is suitable, but cost is than using random copolymerization PP low about 4%.
3, ultraviolet-resistent property: outdoor barrier flaps material formula is at the product that uses out of doors, has increased uvioresistant performance, can improve packaged product shelf time out of doors.
4, the low-temperature flexibility of winter hardiness: PP is poor, can keep the transparency preferably by the cold-resistant barrier flaps material formula that adds LLDPE, can be again that the modification sheet material has good low-temperature toughness.
Table two transparent obstructive sheet material and the cold-resistant raw material mechanical property that intercepts sheet material
| Test event | The transparent obstructive sheet material | The cold-resistant sheet material that intercepts |
| Melt flow rate (MFR) (g/10min) | 3.4 | 2.8 |
| Tensile strength/MP | 36 | 33 |
| Shock strength (23 ℃) (kg cm/cm) | 4.8 | 5.6 |
| (0℃)(kgcm/cm) | 2.6 | 4.3 |
| Heat-drawn wire (0 ℃) | 125 | 120 |
Main raw material is stored in three outdoor large-scale storage tanks, by stainless steel pipes, in three former feed bins in the proportioning room that raw material is carried, raw material total amount that former feed bin has weighing balance to write down to carry from head tank and current material quantity; Proportioning room has four pumps, can provide power for whole feeder system, also has 6 to pulverize the material bin in the proportioning room, can pulverize material for whole charging system provides.
Seven synusia material machines have five forcing machines, and the forcing machine of recovery layer uses 750 kilograms of the per hour maximum production capacities of 130mm screw rod, and charging system can add four kinds of compositions simultaneously, comprises two kinds of raw materials and two kinds of altered contents; Reclaimed materials, polypropylene and polyethylene raw material etc. that 20-50% is generally arranged.The forcing machine of raw material layer uses 750 kilograms of the per hour maximum production capacities of 130mm screw rod, and charging system can add three kinds of compositions simultaneously, comprises two kinds of raw materials and a kind of altered contents; Polypropylene and polyethylene raw material etc. are generally arranged.The forcing machine of evoh layer uses 140 kilograms of the per hour maximum production capacities of 65mm screw rod; The forcing machine of glue layer uses 90 kilograms of the per hour maximum production capacities of 50mm screw rod; These four forcing machines are extruded the primary structure of seven synusia materials.Also have the forcing machine of edging layer to use 140 kilograms of the per hour maximum production capacities of 65mm screw rod, edging layer has the raw material of the side cut of seven synusia materials, after the online pulverizing, join seven synusia materials both sides 5 to 30mm, cut edge, can save the consumption of EVOH and glue, save cost.Raw material by volume pump, static blender, divider, die head, through behind the three-roll press-polishing, through cooling roller, storage rack, wrap-up, becomes the finished product sheet material through forcing machine.On-line detecting system can be controlled sheet thickness by the control automatic die simultaneously.Automatic die can be controlled at the sheet thickness tolerance ± 0.02mm (sheet material of 1.3mm) by regulating automatically, and by repeatedly experiment, sums up the obstruct sheet material that many cover processing condition are produced different size.
The production of fruit cocktail
Use in empty shaper of High-Speed Automatic pressure and the new pattern and cut the counter-rotating mould, produce the fruit cocktail of guaranteeing the quality, reach the international level of like product at 12-15 month.Equipment is by the processing condition of controlled temperature, forming pressure, molding time, moulding multiple product.Cut the counter-rotating mould in the new pattern, guarantee product wall thickness uniformity coefficient, sealing formation degree, to guarantee the fresh-keeping security of food, quality and hygienic requirements when having guaranteed simultaneously to produce in batches.Cutting in the mould to need shaping mould originally and to cut the function that mould two molds are realized, merge in the mold, saved die cost greatly, and I department explore to the base angle circular arc size of auxiliary mould and the angle of mould inner cutter, found suitable I take charge of the better numerical value of main products.Counter-rotating can be fast be sent to subsequent processing with the product of forming, has improved shaping cycle effectively, has improved production capacity, has reduced cost.
The above; it only is preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction; any those skilled in the art;, all still belong in the protection domain of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (7)
1, a kind of obstruct sheet material includes the following respectively composition of parts by weight: polypropylene 80-91, ethylene/vinyl alcohol copolymer 5-6, glue 3-4.
2, obstruct sheet material according to claim 1 is characterized in that: this barrier material also includes the transparent master batch that parts by weight are 3-5.
3, obstruct sheet material according to claim 1 is characterized in that: this barrier material also includes the uvioresistant master batch that parts by weight are 2-5.
4, obstruct sheet material according to claim 1 is characterized in that: this barrier material also includes the polyethylene that parts by weight are 5-10.
5, a kind of fruit cocktail that is made as obstruct sheet material as described in the claim 1 to 4 that adopts.
6, fruit cocktail according to claim 5, it is characterized in that: this fruit cocktail includes two layers of polypropylene, two-layer glue and one deck ethylene/vinyl alcohol copolymer, described polypropylene layer and glue-line are located at the both sides of ethylene/vinyl alcohol copolymer layer respectively, and described glue-line is fixed together polypropylene layer and ethylene/vinyl alcohol copolymer layer.
7, fruit cocktail according to claim 6 is characterized in that: the waste recovery layer that this fruit cocktail produces when also including the two sheets thermoforming, described recovery layer is located between polypropylene layer and the glue-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910131618A CN101519514A (en) | 2009-04-10 | 2009-04-10 | Obstructing sheet and fruit cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910131618A CN101519514A (en) | 2009-04-10 | 2009-04-10 | Obstructing sheet and fruit cup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101519514A true CN101519514A (en) | 2009-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910131618A Pending CN101519514A (en) | 2009-04-10 | 2009-04-10 | Obstructing sheet and fruit cup |
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|---|---|
| CN (1) | CN101519514A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103481612A (en) * | 2013-08-23 | 2014-01-01 | 北京控制工程研究所 | High-impedance composite film |
-
2009
- 2009-04-10 CN CN200910131618A patent/CN101519514A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103481612A (en) * | 2013-08-23 | 2014-01-01 | 北京控制工程研究所 | High-impedance composite film |
| CN103481612B (en) * | 2013-08-23 | 2016-06-01 | 北京控制工程研究所 | A kind of High-impedance composite film |
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Open date: 20090902 |