Self-adhesive labels are an important printing variety widely used in commodity packaging, logistics transportation, and various identification. In self-adhesive label printing, lamination is a very critical link. It can protect the label surface, enhance durability, and improve aesthetics, thereby improving the service life and quality of self-adhesive labels. This article will introduce the lamination process and method of self-adhesive labels after printing, aiming to help readers understand different lamination methods, technical points, and material selection, as well as how to master the correct lamination process to ensure quality and reliability.
The Role of Label Lamination
Label overlays are used to protect labels from environmental damage such as water, UV rays, abrasion, etc. By adding a clear protective film to the surface of the label, Koj tuaj yeem txuas ntxiv lub neej ntawm daim ntawv lo thiab ua kom nws cov tsos pom tseeb.. Daim ntawv lo laminations tseem tuaj yeem txhim kho daim ntawv lo ruaj khov thiab tiv thaiv cov duab lossis cov ntawv ntawm cov ntawv lo los ntawm kev ploj mus rau lub sijhawm.. Laminates kuj muab kev tiv thaiv ntxiv., Ua kom cov ntawv lo tsis raug puas tsuaj thaum lub sijhawm xa khoom thiab khaws cia.. Tag nrho cov txiaj ntsig no tuaj yeem txhim kho cov neeg siv khoom kev paub., Yog li txhim kho kev paub txog hom..
Laminated Material.
Lub lamination ntawm nws tus kheej nplaum daim ntawv lo feem ntau siv cov ntaub ntawv hauv qab no.:
Polyester Film. (PET): Cov ntaub ntawv no yog ruaj khov thiab dej-resistant., Thiab nws muab cov ntawv luam ntawv zoo ntawm cov duab thiab cov ntawv nyeem..
Polypropylene zaj duab xis. (PP): Lub teeb yuag thiab pob tshab heev., this material provides a durable protective layer. Composite fully transparent PP film is currently the most widely used material. The reason is that PP is low-cost and more durable than several other materials.
Polyvinyl Chloride Film (PVC): This material is economical, but relatively less environmentally friendly than PET or PP materials.
Polyethylene film (PE): This material is soft and suitable for label lamination on curved or irregular surfaces.
Due to cost requirements, the coating of paper roll materials is basically replaced by glazing technology. In the label industry, when the varnish cannot meet the brightness and matte requirements, lamination is the most direct way. Peb tuaj yeem xaiv cov khoom siv lamination tsim nyog raws li cov xwm txheej sib txawv ntawm daim ntawv thov kom ntseeg tau tias daim ntawv lo tau txais kev tiv thaiv zoo tshaj plaws thiab kav ntev.
Txoj kev laminating lamination
Daim ntawv lo lamination txoj kev feem ntau tau muab faib ua ntawv-pub lamination thiab yob cov khoom lamination. Cov ntawv pub ntawv yog laminated ntawm lub tshuab laminating, thiab cov khoom yob yog laminated ntawm lub chaw nres tsheb laminating ntawm daim ntawv lo tshuab lossis ntawm lub tshuab tshwj xeeb laminating. Ob txoj kev txheej txheej tau piav qhia hauv qab no:
- Sheetfed Laminated
Sheetfed lamination yog muab cov ntawv lo rau ntawm daim ntawv ntawm cov khoom siv lamination thiab siv cov cua sov thiab siab los khi cov lamination thiab daim ntawv lo ua ke. Txoj kev no haum rau cov xwm txheej uas cov ntawv lo ib leeg yuav tsum tau laminated, Xws li thaum cov ntawv lo ntawm qhov sib txawv lossis kev tuav tshwj xeeb yuav tsum tau ua rau cov ntawv lo.. Sheet-pub lamination tuaj yeem ua tiav los ntawm phau ntawv lossis tsis siv neeg laminators..
There are two ways of laminating sheet-fed self-adhesive labels, namely instant coating lamination and pre-coating film lamination.
1)The compounding process of instant coating compounding is as follows: firstly, the adhesive is coated on the surface of the roll BOPP film, and the solvent in the adhesive is volatilized through the drying device, and then the sheet paper is combined with the roll film at the compounding station. Composite, the two become one under the extrusion of the hot roller, and the film coating process is completed.
2)Pre-coated film composite refers to pre-coating a layer of adhesive or laminating material on the surface of the composite film. There are two types of films, hot melt adhesive type and pressure sensitive type. The laminating machine is equipped with a heated embossing roller, and the pre-coated film is in contact with the sheet of paper during lamination. Under the action of the hot pressing roller, the adhesive is melted, so that the film and the paper are bonded into one. If you use a pressure-sensitive composite film, you can turn off the heating power supply and only rely on pressure to composite.
- Roll Material Lamination
Roll material lamination is to print the roll material film and label together, and then pass them together through the laminating machine for heat and pressure treatment. This method is suitable for the production of a large number of labels, which can improve production efficiency and reduce costs. Lamination of web materials can be done in batch or continuous production.
Web lamination is usually divided into two types: bottomed paper composite film composite and bottomless paper composite film composite.
1)Backing paper composite film lamination refers to compounding a layer of backing paper on the front or back of the roll paper, and then coating a layer of adhesive or laminating material on the backing paper, and then sticking the label on it. Backed paper composite film lamination is a traditional lamination method, which has been replaced by the process of using bottomless paper composite film in recent years.
2)Lub laminating hauv paus ntsiab lus ntawm cov yeeb yaj kiab sib xyaw uas tsis muaj daim ntawv hauv qab yog qhov tseem ceeb tib yam li cov yeeb yaj kiab sib xyaw nrog daim ntawv hauv qab. Cov ntawv rov qab zaj duab xis yog rewound vim yog qhov saum npoo smoothness (nto nro) ntawm nws tus kheej cov ntaub ntawv los hloov cov ntawv rov qab. Tom qab cov kua nplaum tau khi rau saum npoo, nws tuaj yeem tev tawm yam tsis muaj cov kua nplaum lwv. Cov ntaub ntawv siv rau cov ntawv zaj duab xis bottomless feem ntau yog qhov tsis tshua muaj nro BOPP zaj duab xis. Tus nqi ntawm bottomless daim ntawv zaj duab xis lamination yog tsawg, thiab tam sim no nws yog qhov feem ntau siv lamination khoom. Qhov zoo ntawm bottomless ntawv composite zaj duab xis lamination yog tias nws tuaj yeem txhim kho kev tsim khoom zoo, txo cov khib nyiab hauv cov txheej txheem ntau lawm, thiab tib lub sijhawm txhim kho cov khoom lag luam zoo.
Tau kawg, Tsis muaj teeb meem dab tsi yog siv txoj kev lamination,, ib txheej tiv thaiv tuaj yeem tsim nyob rau saum npoo ntawm daim ntawv lo los tiv thaiv daim ntawv lo los ntawm kev puas tsuaj ib puag ncig..
In self-adhesive label printing, Lamination yog ib kauj ruam tseem ceeb heev, vim tias nws tuaj yeem ua rau daim ntawv lo zoo nkauj dua, ruaj, thiab yoog raws.. Txoj kev lamination kom raug thiab cov khoom siv xaiv tuaj yeem ua kom muaj qhov zoo thiab kev pabcuam lub neej ntawm cov ntawv lo nplaum tus kheej.. Yog li ntawd, Cov chaw tsim khoom luam ntawv thiab cov neeg siv yuav tsum xyuam xim rau kev xaiv cov txheej txheem lamination tsim nyog thiab cov khoom siv, thiab nqa tawm kev tswj hwm zoo kom ntseeg tau qhov kawg zoo ntawm cov ntawv lo nplaum tus kheej..
