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Low-friction low-temperature heat-sealing BOPET film and preparation method thereof

A low-temperature heat-sealing, low-friction technology, used in chemical instruments and methods, lamination, layered products, etc., can solve problems such as affecting food hygiene, affecting health, and increasing packaging costs, improving optical performance and reducing heat sealing. Energy consumption and the effect of solving large surface friction

Inactive Publication Date: 2020-03-27
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The overall performance of BOPET film is excellent, but there are also some shortcomings: ordinary BOPET film cannot be directly heat-sealed
For example, using composite methods such as BOPET / adhesive / CPP or BOPET / adhesive / PE or BOPET / AL / adhesive / CPP will not only greatly increase the packaging cost, but also affect the packaged food due to the presence of residual solvents during compounding. health, affecting people's health

Method used

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  • Low-friction low-temperature heat-sealing BOPET film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A low-friction, low-temperature heat-sealing BOPET film is composed of an upper surface layer, a core layer and a lower surface layer.

[0022] The upper surface layer is an anti-adhesive layer, which is composed of the following raw materials by weight percentage: 45% of bright polyester chips, 5% of smooth masterbatch, and 50% of anti-adhesive masterbatch. Wherein the smooth masterbatch comprises the following raw materials in weight percentage: 2% of pentaerythritol stearate, and the balance of bright polyester chips. The anti-adhesive masterbatch includes raw materials in the following percentages by weight: 4% spherical transparent glass beads, and a large amount of bright polyester chips; the particle diameter of the spherical transparent glass beads is 2.0-2.5 μm.

[0023] The raw material of the core layer is bright polyester chips.

[0024] The lower surface layer is a low-temperature heat-sealing layer, and the raw material is a copolymerized modified PETG po...

Embodiment 2

[0032] A low-friction, low-temperature heat-sealing BOPET film is composed of an upper surface layer, a core layer and a lower surface layer.

[0033] The upper surface layer is an anti-adhesive layer, which is composed of the following raw materials by weight percentage: 40% of bright polyester chips, 10% of smooth masterbatch, and 50% of anti-adhesive masterbatch. Wherein the smooth masterbatch comprises the following raw materials in percentage by weight: 3% of pentaerythritol stearate, and the balance of bright polyester chips. The anti-adhesive masterbatch includes the following raw materials in weight percentage: 5% of spherical transparent glass beads, and a large amount of bright polyester chips; the particle diameter of spherical transparent glass beads is 2.0-2.5 μm.

[0034] The raw material of the core layer is bright polyester chips.

[0035] The lower surface layer is a low-temperature heat-sealing layer, and the raw material is a copolymerized modified PETG pol...

Embodiment 3

[0043] A low-friction, low-temperature heat-sealing BOPET film is composed of an upper surface layer, a core layer and a lower surface layer.

[0044] The upper surface layer is an anti-adhesive layer, which is composed of the following raw materials by weight percentage: 50% of bright polyester chips, 10% of smooth masterbatch, and 40% of anti-adhesive masterbatch. Wherein the smooth masterbatch comprises the following raw materials in weight percentage: 4% of pentaerythritol stearate, and the balance of bright polyester chips. The anti-adhesive masterbatch includes the following raw materials in weight percentage: 6% spherical transparent glass beads, and a large amount of bright polyester chips; the particle diameter of the spherical transparent glass beads is 2.0-2.5 μm.

[0045] The raw material of the core layer is bright polyester chips.

[0046] The lower surface layer is a low-temperature heat-sealing layer, and the raw material is a copolymerized modified PETG polye...

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Abstract

The invention discloses a low-friction low-temperature heat-sealing BOPET film and a preparation method thereof. The film is composed of an upper surface layer, a core layer and a lower surface layer.The lower surface layer is a low-temperature heat-sealing layer and is made of a copolymerization modified PETG polyester heat-sealing master batch, the copolymerization modified PETG polyester heat-sealing master batch is obtained by copolymerizing terephthalic acid, ethylene glycol, neopentyl glycol and oxalic acid, and the molar ratio of terephthalic acid to ethylene glycol to neopentyl glycolto oxalic acid is (40-45): (40-45): (5-10): (5-10). The upper surface layer is an anti-sticking layer and is prepared from the following raw materials in percentage by weight: 40-50% of super brightpolyester chips, 5-10% of a smooth master batch and 40-50% of an anti-sticking master batch. The core layer is made of super bright polyester chips. The prepared low-friction low-temperature heat-sealing BOPET film is stable in performance and good in low-temperature heat-sealing performance, the application field of the BOPET heat-sealing film is expanded, and heat-sealing energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of films, in particular to a low-friction, low-temperature heat-sealing BOPET film and a preparation method thereof. Background technique [0002] BOPET film is a kind of packaging film with comprehensive performance. It has good transparency and luster; it has good air tightness and fragrance retention. The mechanical properties of the film are excellent, and its strength and toughness are the best among all thermoplastics. The tensile strength and impact strength are much higher than ordinary films; and it has good strength and stable size, and is suitable for secondary processing such as printing and paper bags. BOPET film also has excellent heat resistance, cold resistance and good chemical resistance and oil resistance. [0003] In recent years, China's BOPET film industry has developed rapidly, the application field of the industry market has continued to expand, the degree of specialization of produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/18B32B27/08B32B37/00B32B27/36C08L67/02C08K5/103C08K7/20C08J5/18
CPCB32B27/08B32B27/18B32B27/36B32B37/00C08J5/18C08J2367/02C08J2467/02C08K5/103C08K7/20
Inventor 张少伟
Owner ANHUI GUOFENG PLASTIC
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