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Invisible car cover protective film with TPU substrate and preparation process

A production process and protective film technology, applied in the direction of pressure-sensitive film/sheet, film/sheet-shaped adhesive, adhesive type, etc., can solve the problems of high cost, poor durability of protective film, waste of consumables, etc., to achieve The effect of improving the utilization rate

Inactive Publication Date: 2019-09-10
NINGBO JIAHUA NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the current TPU base car surface paint protection film has poor durability, the problem of glue residue in use, and the problem of high cost and waste of consumables in the production process.

Method used

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  • Invisible car cover protective film with TPU substrate and preparation process
  • Invisible car cover protective film with TPU substrate and preparation process
  • Invisible car cover protective film with TPU substrate and preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0067] The present embodiment provides a kind of manufacturing process of the invisible car clothing protection film of TPU base material, specifically as follows:

[0068] First form the TPU substrate layer, and the raw material formula is: 86 parts of polyester-polyether copolymer; 1-6 parts of slip agent 1753; 6 parts of anti-UV agent #531, and 1 part of transparent masterbatch. Dry in a blast drying oven at 80°C for 4 hours, wait until the barrel of the single-screw extruder rises to 180°C in zone 1, 210°C in zone 2, 210°C in zone 3, 220°C in zone 4, 220°C at the adapter, and the temperature of the die at the head rises to 220°C: Add the above granules for melting and plasticization, extrude and cast through a casting die with a gap of 0.15mm, and continuously pass through a horizontal three-roll calender with a preset roll distance to calender and cool with circulating water to form the required film . The thickness of the original TPU film produced by this method is 0.1...

Embodiment 2

[0077] The substrate layer formula of TPU in this embodiment: 91 parts of polyester-polyether copolymer; 1-5 parts of slip agent 1753; 3 parts of anti-UV agent #531, and 1 part of transparent masterbatch. Dry in a blast drying oven at 80°C for 4 hours, wait until the barrel of the single-screw extruder rises to 180°C in zone 1, 210°C in zone 2, 210°C in zone 3, 220°C in zone 4, 220°C at the adapter, and the temperature of the die at the head rises to 220°C: Add the above granules for melting and plasticization, extrude and cast through a casting die with a gap of 0.15mm, and continuously pass through a horizontal three-roll calender with a preset roll distance to calender and cool with circulating water to form the required film .

[0078] The produced TPU original film, because TPU is a non-polar material, has low surface activity and needs to be pretreated with aliphatic polyurethane. Polyurethane oligomers are selected as the pretreatment agent and diluted to a certain conc...

Embodiment 3

[0081] The substrate layer formula of TPU in this embodiment: 91 parts of polyester-polyether copolymer; 1-5 parts of slip agent 1753; 3 parts of anti-UV agent #531, and 1 part of transparent masterbatch. Dry in a blast drying oven at 80°C for 4 hours, wait until the barrel of the single-screw extruder rises to 180°C in zone 1, 210°C in zone 2, 210°C in zone 3, 220°C in zone 4, 220°C at the adapter, and the temperature of the die at the head rises to 220°C: Add the above granules for melting and plasticization, extrude and cast through a casting die with a gap of 0.15mm, and continuously pass through a horizontal three-roll calender with a preset roll distance to calender and cool with circulating water to form the required film .

[0082]One side of the TPU substrate is directly coated. The pretreatment layer is formed by mixing butanone and ethyl acetate, wherein the mixing ratio of butanone and ethyl acetate is 1:8. The anti-scratch coating is a thermosetting self-healing...

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Abstract

The invention discloses an invisible car cover protective film with a TPU substrate. The invisible car cover protective film comprises a protective layer, a substrate layer and a release layer, wherein the protective layer is prepared from PET, the substrate layer is prepared from a polyester / polyether copolymer system, and the release layer is prepared from PET; a lower adhesive layer and an upper adhesive layer are separately adhered to main surfaces on both sides of the substrate layer, an aliphatic pressure-sensitive adhesive is coated on the surface of the release layer, and then the lower adhesive layer is adhered to one main surface of the substrate layer in a film transfer mode; and the upper adhesive layer is directly coated on the other main surface of the substrate layer. The invention also provides a preparation process of the invisible car cover protective film with the TPU substrate, and the preparation process comprises the steps: (1) preparing the TPU substrate layer, (2) pretreating the substrate layer, (3) preparing the lower adhesive layer, (4) performing film transfer, (5) preparing the upper adhesive layer, and (6) preparing the protective layer. The bonding force between the adhesive layers and the substrate layer is good, a high product strength and a high utilization rate of raw materials are achieved, and automatic repair of scratches can be achieved through polyurethane microcapsule particles in the adhesive layers.

Description

technical field [0001] The invention relates to polymer products, in particular to an automobile surface paint protective film and a manufacturing process thereof. Background technique [0002] At present, as automobiles, home furnishing and high-end equipment enter thousands of households and all walks of life, especially automobiles have become the basic equipment of most ordinary families. The original paint of automobiles is easily damaged due to long-term exposure to the external environment. maintain. How to protect the surfaces of automobiles and households from extreme climate changes, especially the harsh external environment, has become a topic that must be considered in the industry, and must also meet environmental protection requirements. [0003] At present, the method of covering the paint surface with a protective film is generally adopted. The common protective film is a TPU substrate protective film, but its defects limit its popularization and use, mainly...

Claims

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Application Information

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IPC IPC(8): C09J7/29C09J7/38C09J175/04C08L75/04C09J4/02C09J4/06
CPCC09J4/06C09J175/04C09J2467/006C09J2475/00C09J2475/006C09J7/29C09J7/38C09J2301/122C09J2301/162C09J2301/302
Inventor 倪利华千胜宇葛政台
Owner NINGBO JIAHUA NEW MATERIAL TECH CO LTD
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