A mobile phone screen protector device includes a positioning seat, a positioning frame, an auxiliary adhesive sheet, a screen protector, and a scraper. The positioning seat has a first raised portion, a second raised portion, and a positioning space between the first and second raised portions for accommodating a mobile phone with a screen facing upward. The first raised portion is higher than the second raised portion. The auxiliary adhesive sheet is adhered to an underside of the positioning frame. The screen protector is adhered to an underside of the auxiliary adhesive sheet. The positioning frame and the auxiliary adhesive sheet are confined to the tops of the first and second raised portions, and the screen protector is inclined at an angle relative to the screen. The scraper is pressed to scrape against the auxiliary adhesive sheet for the screen protector to be adhered to the screen.

A portable film application apparatus includes a base, a positioning seat, a film holder, a conveyor and a film detaching device, wherein a positioning station and a film sticking station are provided on two sides of the base, respectively. The positioning seat is disposed at an end of the positioning station to lock the position of an electronic device. The film holder is disposed at an end of the film sticking station to lock the position of a film. The conveyor slides the positioning seat alternately between the positioning station and the film sticking station to match the electronic device with a membrane. The film detaching device is disposed at an end of the film sticking station to separate a release layer from the membrane.

Disclosed herein is a screen protector assembly and a screen protector applicator comprising a screen protector assembly and an applicator tray, the screen protector assembly comprising a cover layer, a screen protector layer and a retention layer, wherein: the cover layer is bonded on a first side of the screen protector layer by a first glue layer provided on the screen protector layer; the retention layer is bonded on a second side of the screen protector by a second glue layer provided on the retention layer; and an interlayer is provided between the retention layer and the screen protector layer. The screen protector applicator has a simple structure, and can store and protect the screen protector assembly before application of the screen protector layer to the screen. In the process of screen protector application, the operation method is simple and convenient.

A method for manufacturing a composite preform is provided, including preparing a preform that is formed from a plastic material, preparing a tubular heat shrinkable plastic member that is longer than the preform and has a margin for thermocompression bonding at one end, inserting the preform into the plastic member having the plastic member undergo thermal shrinkage by heating the preform and the plastic member, and bonding the margin of the plastic member by thermocompression.

Devices, methods and systems disclosed herein relate to the application of a protective film on a surface of an electronic device that instantly reduces air bubbles and eliminates the waiting time usually required when using a wet fluid solution. In one embodiment, a flange may be configured to couple to the protective film. The flange may aid in the accurate application of the protective film to the electronic device.

An overlay applicator tray including a cradle including a device slot. The device slot is configured to securely hold an electronic device in the cradle. The overlay applicator tray also can include an overlay applicator. The overlay applicator can include an overlay layer and an adhesive release liner. The overlay layer can include a top side and a bottom side. The bottom side is configured to be adhered to a screen of the electronic device. The adhesive release liner is removably attached to the bottom side of the overlay layer. The overlay applicator tray additionally can include an alignment piece coupling the cradle to the overlay applicator. The alignment piece aligns the overlay layer of the overlay applicator with the screen as the overlay layer is applied to the screen when the electronic device is securely held in the device slot. The overlay applicator tray further can include a first pull tab on the adhesive release liner. The first pull tab is configured to be pulled to remove the adhesive release liner from the bottom side of the overlay layer and expose an adhesive of the overlay layer. Other embodiments are described.

A hand-held squeegee for applying or installing wraps and/or films to surfaces. The hand-held squeegee includes a blade portion, a handle portion, a ring loop portion, a tool storage pocket for storing a knife, and hooks for wrapping film around the edge of a surface. The ring loop portion can be slipped onto a user's finger so that the squeegee can be conveniently secured to the back of the user's hand when it is not actively in use by the user or when the user is using another tool.

A machine can include a base including a first cradle. The first cradle can include a device slot being configured to securely hold a first electronic device. The machine also can include an alignment piece hingedly attached to the base at a hinge. The alignment piece can include an alignment base configured to engage with an alignment mechanism of an overlay applicator. The machine additionally can include a pulling piece movably attached to the base. The pulling piece can be configured to remove an adhesive release liner of the overlay applicator to expose an adhesive agent of an overlay of the overlay applicator when the alignment piece is rotated relative to the base around the hinge from a first alignment piece position to a second alignment piece position. Other embodiments are described.

Adhesion-regulating agents for enhancing the adhesion values of acrylic adhesives, and methods of using adhesion-regulating agents for treating a removable flooring substrate surface for tuning the adhesion of the flooring substrate surface to objects comprising an acrylic adhesive are disclosed.

The present disclosure provides a screen protector pasting assisting device for automobiles, including a body structure, wherein the body structure includes two long edges and two short edges, each of the long edges including a first limit portion, a first sink portion, a second sink portion, a first sink portion, and a first limit portion, one ends of the two first limit portions being respectively connected to the two short edges. The second sink portion is provided with a positioning protrusion. The device features a simple structure and convenient operations, and is suitable for use by a non-professional person in screen protector pasting, thereby achieving a strong practicability.