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Transverse-longitudinal linear easy-to-tear film and manufacturing process thereof

A technology for manufacturing process and easy-tear film, applied in the field of easy-tear film and its manufacturing process, can solve the problems of increased process, no tearing, increased cost, etc., and achieves the effects of good physical properties and excellent low-temperature heat sealing performance

Inactive Publication Date: 2020-04-28
JINHUA HENGYU PACKAGING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the films used for edible packaging bags on the market need to be cut at the edge to facilitate tearing. This method will increase the process and increase the cost during the production stage. Can not be torn in a straight line, this application provides an easy-to-tear film that can be torn in a horizontal and vertical line to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The horizontal and vertical linear easy-to-tear film includes COC, LLDPE and DDPE, wherein the mass fraction of COC is 35%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 15%.

[0014] The manufacturing process of horizontal and vertical linear easy-to-tear films includes feeding, hot-melt filtration, extrusion molding, casting cooling, edge trimming recovery, corona treatment and aging treatment steps, of which: (1) Feeding: COC, LLDPE and DDPE raw materials Add to the three barrels of the extruder according to the above mass fraction ratio; (2) hot melting and filtration: the temperature of each barrel stage is controlled at 180-190°C-210-220°C-220-230°C-230-250°C; Before the melt film is formed, a 5-layer screen is used to filter; (3) extrusion molding: the temperature of the die head is controlled at 230-250°C, and the temperature of the melt is kept at 240±15°C to obtain a hot-melt film; (4) casting and cooling: Hot-melt film casting cooling, t...

Embodiment 2

[0016] The horizontal and vertical linear easy-to-tear film includes COC, LLDPE and DDPE, wherein the mass fraction of COC is 40%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 10%.

[0017] The manufacturing process of horizontal and vertical linear easy-to-tear films includes feeding, hot-melt filtration, extrusion molding, casting cooling, edge trimming recovery, corona treatment and aging treatment steps, of which: (1) Feeding: COC, LLDPE and DDPE raw materials Add to the three barrels of the extruder according to the above mass fraction ratio; (2) hot melting and filtration: the temperature of each barrel stage is controlled at 180-190°C-210-220°C-220-230°C

[0018] -230~250°C; filter with a 5-layer screen before the melt is formed into a film; (3) extrusion molding: the temperature of the die head is controlled at 230~250°C, and the temperature of the melt is kept at 240±15°C to obtain a hot-melt film ;⑷Casting cooling: hot-melt film casting cooling...

Embodiment 3

[0020] The horizontal and vertical linear easy-to-tear film includes COC, LLDPE and DDPE, wherein the mass fraction of COC is 30%, the mass fraction of LLDPE is 50%, and the mass fraction of DDPE is 20%.

[0021] The manufacturing process of horizontal and vertical linear easy-to-tear films includes feeding, hot-melt filtration, extrusion molding, casting cooling, edge trimming recovery, corona treatment and aging treatment steps, of which: (1) Feeding: COC, LLDPE and DDPE raw materials Add to the three barrels of the extruder according to the above mass fraction ratio; (2) hot melting and filtration: the temperature of each barrel stage is controlled at 180-190°C-210-220°C-220-230°C-230-250°C; Before the melt film is formed, a 5-layer screen is used to filter; (3) extrusion molding: the temperature of the die head is controlled at 230-250°C, and the temperature of the melt is kept at 240±15°C to obtain a hot-melt film; (4) casting and cooling: Hot-melt film casting cooling, t...

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Abstract

The invention discloses a transverse-longitudinal linear easy-to-tear film and a manufacturing process thereof. The transverse-longitudinal linear easy-to-tear film comprises COC, LLDPE and DDPE, wherein the mass fraction of COC is 20-50%, the mass fraction of LLDPE is 30-60%, the mass fraction of DDPE is 10-20%, and the manufacturing process of the transverse-longitudinal linear easy-to-tear filmcomprises the steps of feeding, hot melting and filtering, extrusion molding, tape casting and cooling, trimming and recycling, corona treatment and aging treatment. The film prepared from COC, LLDPEand DDPE is prepared from COC of LLDPE with a large mass fraction and a small amount of DDPE, the film is easier to tear while certain strength is provided, and in addition, a torn crack of the filmis a linear crack; by means of the manufacturing process, the product has good physical properties, especially the low-temperature heat sealing performance is excellent, and the heat sealing temperature is 103-105 DEG C; and the product can be used for compounding to form easy-to-tear films with different properties.

Description

technical field [0001] The invention relates to an easy-tear film and a manufacturing process thereof, in particular to a horizontal and vertical linear easy-tear film and a manufacturing process thereof. Background technique [0002] At present, most of the films used for edible packaging bags on the market need to be cut at the edge to facilitate tearing. This method will increase the process and increase the cost during the production stage. It cannot be torn in a straight line, and this application provides an easy-tear film that can be torn in a horizontal and vertical line to solve the above problems. Contents of the invention [0003] The main purpose of the present invention is to provide a horizontal and vertical straight easy-tear film and its manufacturing process, which can effectively solve the problems in the background technology. [0004] In order to achieve the above object, the technical scheme that the present invention takes is: [0005] The horizonta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L45/00C08L23/06C08J5/18B29D7/01
CPCB29D7/01C08J5/18C08J2323/08C08J2423/06C08J2445/00
Inventor 杜宗衡
Owner JINHUA HENGYU PACKAGING CO LTD
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