CN111073124A - Easily torn film with horizontal and vertical straight lines and manufacturing process thereof - Google Patents
Easily torn film with horizontal and vertical straight lines and manufacturing process thereof Download PDFInfo
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- CN111073124A CN111073124A CN201911161921.5A CN201911161921A CN111073124A CN 111073124 A CN111073124 A CN 111073124A CN 201911161921 A CN201911161921 A CN 201911161921A CN 111073124 A CN111073124 A CN 111073124A
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- mass fraction
- ddpe
- lldpe
- coc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2445/00—Characterised by the use of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Derivatives of such polymers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a transverse and longitudinal straight-line easy-tear film and a manufacturing process thereof, wherein the transverse and longitudinal straight-line easy-tear film comprises COC, LLDPE and DDPE, wherein the mass fraction of the COC is 20-50%, the mass fraction of the LLDPE is 30-60%, the mass fraction of the DDPE is 10-20%, and the manufacturing process of the transverse and longitudinal straight-line easy-tear film comprises the steps of feeding, hot-melt filtering, extrusion molding, tape casting cooling, trimming recovery, corona treatment and aging treatment. The film manufactured by using COC, LLDPE and DDPE is made by combining COC of LLDPE with a large mass fraction and a small amount of DDPE, so that the film is easier to tear while providing certain strength, and the torn slit is a linear slit; the manufacturing process ensures that the product has good physical properties, particularly excellent low-temperature heat sealing performance, and the heat sealing temperature is 103-105 ℃; the product can be used for compounding to form easy-to-tear films with different properties.
Description
Technical Field
The invention relates to an easy-to-tear film and a manufacturing process thereof, in particular to an easy-to-tear film with a horizontal straight line and a vertical straight line and a manufacturing process thereof.
Background
At present, be used for the film on the edible wrapping bag in the market mostly need set up the incision in border department so that tear, this kind of mode can increase the process in the production phase, and the increase cost, in addition, appears easily when tearing not tearing or unable straight line is torn, and this application provides the easy dyestripping that can violently indulge the straight line and tear to above problem.
Disclosure of Invention
The invention mainly aims to provide a transverse and longitudinal straight easy-to-tear film and a manufacturing process thereof, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the easy-to-tear film with the transverse and longitudinal straight lines comprises COC, LLDPE and DDPE, wherein the mass fraction of the COC is 20-50%, the mass fraction of the LLDPE is 30-60%, and the mass fraction of the DDPE is 10-20%.
Preferably, the mass fraction of COC is 35%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 15%.
Preferably, the mass fraction of COC is 40%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 10%.
Preferably, the mass fraction of COC is 30%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 20%.
A manufacturing process of a transverse and longitudinal linear easy-tear film comprises the steps of feeding, hot melt filtering, extrusion forming, tape casting cooling, trimming recovery, corona treatment and aging treatment, wherein the COC, LLDPE and DDPE raw materials are respectively added into three barrels of an extruder, ⑵ hot melt and filtering are carried out, the temperature of each barrel stage is controlled to be 180-190-210-220-230-250 ℃, screen filtering with a 5-layer structure is adopted before film making of a melt, ⑶ extrusion forming is carried out, the temperature of a die head is controlled to be 230-250 ℃, the temperature of the melt is kept at 240 +/-15 ℃ to obtain a hot melt film, ⑷ tape casting cooling is carried out, the temperature of a cooling roller is controlled to be 30-25 ℃, the air volume and the angle of an air knife are adjusted, the air temperature is controlled to be 30 ℃, ⑸ trimming recovery is carried out, the scrap is cut by an online trimming recovery device, then conveyed to a crusher to be recycled, the scrap edge recovery ratio is less than 5%, corona treatment is carried out, the surface layer is subjected to corona treatment, the aging treatment can be achieved, the surface layer is aged, the surface layer is dried, and the aging treatment is carried out, and the aging treatment is carried.
Compared with the prior art, the invention has the following beneficial effects: the film manufactured by using COC, LLDPE and DDPE is made by combining COC of LLDPE with a large mass fraction and a small amount of DDPE, so that the film is easier to tear while providing certain strength, and the torn slit is a linear slit; the manufacturing process ensures that the product has good physical properties, particularly excellent low-temperature heat sealing performance, and the heat sealing temperature is 103-105 ℃; the product can be used for compounding to form easy-to-tear films with different properties.
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
The easy-to-tear film with the transverse and longitudinal straight lines comprises COC, LLDPE and DDPE, wherein the mass fraction of the COC is 35%, the mass fraction of the LLDPE is 50%, and the mass fraction of the DDPE is 15%.
A manufacturing process of a transverse and longitudinal linear easy-tear film comprises the steps of feeding, hot melt filtering, extrusion forming, tape casting cooling, trimming recovery, corona treatment and aging treatment, wherein the feeding is ⑴, COC, LLDPE and DDPE raw materials are respectively added into three barrels of an extruder according to the mass fraction ratio, ⑵ hot melt and filtering are carried out, the temperature of each barrel stage is controlled to be 180-190-210-220-230-250 ℃, screen filtering with a 5-layer structure is adopted before film making of a melt body, ⑶ extrusion forming is carried out, the temperature of a die head is controlled to be 230-250 ℃, the temperature of the melt body is kept at 240 +/-15 ℃ to prepare a hot melt film, tape casting cooling is carried out, the temperature of a cooling roller is controlled to be 30-25 ℃, the air volume and angle of an air knife are adjusted, the air temperature is controlled to be 30 ℃, ⑸ trimming recovery is carried out, the scrap material is cut by an online trimming recovery device, then conveyed to a crusher to be crushed, the scrap edge material is added into the extruder, the recovery ratio is less than 5%, corona treatment is carried out, the surface layer is aged to reach 44-46, the aging treatment is carried out, and the aging treatment is carried out, and.
Example 2
The easy-to-tear film with the transverse and longitudinal straight lines comprises COC, LLDPE and DDPE, wherein the mass fraction of the COC is 40%, the mass fraction of the LLDPE is 50%, and the mass fraction of the DDPE is 10%.
A manufacturing process of a transverse and longitudinal linear easy-to-tear film comprises the steps of feeding, hot melt filtering, extrusion molding, casting cooling, trimming edge recovery, corona treatment and aging treatment, wherein ⑴ feeding comprises the steps of respectively adding COC, LLDPE and DDPE raw materials into three charging barrels of an extruder according to the mass fraction ratio, ⑵ hot melting and filtering are carried out, the temperature of each charging barrel stage is controlled to be 180-190-210-220-230 DEG C
230-250 ℃, filtering a melt by using a screen with a 5-layer structure before film making, ⑶ extruding and forming, controlling the die head temperature to 230-250 ℃ and keeping the melt temperature at 240 +/-15 ℃ to obtain a hot melt film, ⑷ tape casting and cooling, controlling the temperature of a cooling roller to 30-25 ℃, adjusting the air volume and angle of an air knife, controlling the air temperature to 30 ℃, ⑸ edge cutting and recycling, cutting the edge material by an online edge cutting and recycling device, then conveying the cut edge material to a crusher for crushing, then adding the crushed edge material into an extruder for recycling, controlling the proportion of edge material recycling to be less than 5%, ⑹ corona treatment, carrying out corona treatment on a surface layer to enable the surface energy to reach 44-46 dynes, ⑺ aging treatment, hanging the prepared film mother roll on a shelf for aging treatment for 36-48 hours, and keeping clean, dust-free, drying and ventilating in an aging treatment area.
Example 3
The easy-to-tear film with the transverse and longitudinal straight lines comprises COC, LLDPE and DDPE, wherein the mass fraction of the COC is 30%, the mass fraction of the LLDPE is 50%, and the mass fraction of the DDPE is 20%.
A manufacturing process of a transverse and longitudinal linear easy-tear film comprises the steps of feeding, hot melt filtering, extrusion forming, tape casting cooling, trimming recovery, corona treatment and aging treatment, wherein the feeding is ⑴, COC, LLDPE and DDPE raw materials are respectively added into three barrels of an extruder according to the mass fraction ratio, ⑵ hot melt and filtering are carried out, the temperature of each barrel stage is controlled to be 180-190-210-220-230-250 ℃, screen filtering with a 5-layer structure is adopted before film making of a melt body, ⑶ extrusion forming is carried out, the temperature of a die head is controlled to be 230-250 ℃, the temperature of the melt body is kept at 240 +/-15 ℃ to prepare a hot melt film, tape casting cooling is carried out, the temperature of a cooling roller is controlled to be 30-25 ℃, the air volume and angle of an air knife are adjusted, the air temperature is controlled to be 30 ℃, ⑸ trimming recovery is carried out, the scrap material is cut by an online trimming recovery device, then conveyed to a crusher to be crushed, the scrap edge material is added into the extruder, the recovery ratio is less than 5%, corona treatment is carried out, the surface layer is aged to reach 44-46, the aging treatment is carried out, and the aging treatment is carried out, and.
The specific embodiments are only for explaining the present invention, and the present invention is not limited thereto, and those skilled in the art can make modifications without inventive contribution to the present embodiments as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (5)
1. Horizontal indulge straight line easily tears membrane, its characterized in that: the composite material comprises COC, LLDPE and DDPE, wherein the mass fraction of the COC is 20-50%, the mass fraction of the LLDPE is 30-60%, and the mass fraction of the DDPE is 10-20%.
2. The easy-to-tear film with straight transverse and longitudinal lines according to claim 1, wherein: the mass fraction of COC is 35%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 15%.
3. The easy-to-tear film with straight transverse and longitudinal lines according to claim 1, wherein: the mass fraction of COC is 40%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 10%.
4. The easy-to-tear film with straight transverse and longitudinal lines according to claim 1, wherein: the mass fraction of COC is 30%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 20%.
5. A manufacturing process for manufacturing the transverse and longitudinal straight-line easily-torn film disclosed by any one of claims 1-4 is characterized by comprising the steps of feeding, hot-melt filtering, extrusion molding, tape casting cooling, trimming recovery, corona treatment and aging treatment, wherein the steps of feeding ⑴, feeding COC, LLDPE and DDPE raw materials into three cylinders of an extruder respectively, wherein the mass fractions are added according to the steps of claims 2-4, ⑵ hot melting and filtering are carried out, the temperature of each cylinder stage is controlled to be 180-190-210-220-230-250 ℃, screen filtering with a 5-layer structure is adopted before film making of a molten body, ⑶ extrusion molding is carried out, the temperature of a die head is controlled to be 230-250 ℃, the temperature of the molten body is kept at 240 +/-15 ℃, a hot-melt film is prepared, ⑷ tape casting cooling is carried out, the temperature of a cooling roller is controlled to be 30-25 ℃, the air volume and the angle of an air knife are adjusted, the air temperature is controlled to be 30 ℃, ⑸ trimming recovery is carried out, the scrap edge is cut by an online trimming recovery device, then is fed into a pulverizer, the scrap is added into a shelf, the extruder, the aging treatment is carried out, the surface drying treatment is carried out, the aging treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911161921.5A CN111073124A (en) | 2019-11-25 | 2019-11-25 | Easily torn film with horizontal and vertical straight lines and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911161921.5A CN111073124A (en) | 2019-11-25 | 2019-11-25 | Easily torn film with horizontal and vertical straight lines and manufacturing process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111073124A true CN111073124A (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911161921.5A Pending CN111073124A (en) | 2019-11-25 | 2019-11-25 | Easily torn film with horizontal and vertical straight lines and manufacturing process thereof |
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| CN (1) | CN111073124A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043694A (en) * | 2021-03-12 | 2021-06-29 | 金华市恒宇包装有限公司 | Electronic carrier band heat-sealing easy-to-tear protective film |
-
2019
- 2019-11-25 CN CN201911161921.5A patent/CN111073124A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043694A (en) * | 2021-03-12 | 2021-06-29 | 金华市恒宇包装有限公司 | Electronic carrier band heat-sealing easy-to-tear protective film |
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Application publication date: 20200428 |