A protective tape that improves solder bonding properties and reduces wafer warping. The protective tape includes, in the following order, an adhesive agent layer, a first thermoplastic resin layer, a second thermoplastic resin layer, and a matrix film layer. The protective tape satisfies the conditions expressed by the following formulae (1) to (3):
Ga>Gb(1)
Ta<Tb(2)
(Ga*Ta+Gb*Tb)/(Ta+Tb)1.4E+06 Pa.(3)
Ga represents a shear storage modulus of the first thermoplastic resin layer at a pasting temperature at which the protective tape is pasted; Gb represents a shear storage modulus of the second thermoplastic resin layer at the pasting temperature at which the protective tape is pasted; Ta represents a thickness of the first thermoplastic resin layer; and Tb represents a thickness of the second thermoplastic resin layer.

A protective tape that improves solder bonding properties and reduces wafer warping. The protective tape includes, in the following order, an adhesive agent layer, a first thermoplastic resin layer, a second thermoplastic resin layer, and a matrix film layer. The protective tape satisfies the conditions expressed by the following formulae (1) to (3):
Ga>Gb(1)
Ta<Tb(2)
(Ga*Ta+Gb*Tb)/(Ta+Tb)1.4E+06 Pa.(3)
Ga represents a shear storage modulus of the first thermoplastic resin layer at a pasting temperature at which the protective tape is pasted; Gb represents a shear storage modulus of the second thermoplastic resin layer at the pasting temperature at which the protective tape is pasted; Ta represents a thickness of the first thermoplastic resin layer; and Tb represents a thickness of the second thermoplastic resin layer.

A waterproofing membrane system for waterproofing a concrete substrate is disclosed. The waterproofing membrane may comprise a first layer comprising a thermoplastic elastomeric waterproof material using advanced polymerization and squeeze technology. The second layer may comprise a carrier sheet that comprises a fabric. The third layer may comprise an adhesive to provide bonding of the first layer with a concrete substrate upon contact. In addition, the third layer may reduce migration of water and vapor traveling between the first layer and the concrete substrate. In some examples, the waterproofing membrane may also comprise a fourth layer to provide mechanical protection and ease of handling for the first layer, the second layer, and the third layer. In some examples, the first layer may comprise a thermoplastic polyolefin (TPO), the fabric may comprise polypropylene and/or polyethylene, the adhesive may comprise a C5 petroleum resin, and the fourth layer may be a protective coating comprising quartz sand (SiO2) having a reflectivity of 4.5%.

A waterproofing membrane system for waterproofing a concrete substrate is disclosed. The waterproofing membrane may comprise a first layer comprising a thermoplastic elastomeric waterproof material using advanced polymerization and squeeze technology. The second layer may comprise a carrier sheet that comprises a fabric. The third layer may comprise an adhesive to provide bonding of the first layer with a concrete substrate upon contact. In addition, the third layer may reduce migration of water and vapor traveling between the first layer and the concrete substrate. In some examples, the waterproofing membrane may also comprise a fourth layer to provide mechanical protection and ease of handling for the first layer, the second layer, and the third layer. In some examples, the first layer may comprise a thermoplastic polyolefin (TPO), the fabric may comprise polypropylene and/or polyethylene, the adhesive may comprise a C5 petroleum resin, and the fourth layer may be a protective coating comprising quartz sand (SiO2) having a reflectivity of 4.5%.

Film constructions and articles including the film constructions, wherein a film construction includes: a backing having a first major surface and a second major surface, wherein the backing includes at least one backing layer comprising a polylactic acid and an ethylene-containing copolymer comprising a polar comonomer; a tie layer disposed on the first major surface of the backing; and a release layer disposed on the tie layer.

A pressure-sensitive adhesive sheet (X1), which is a pressure-sensitive adhesive sheet for build stage use according to the present invention, has a multilayer structure typically including a substrate (11) and a pressure-sensitive adhesive layer (12). The pressure-sensitive adhesive sheet (X1) has a puncture strength of 3.3 to 12 N, where the puncture strength is determined as a maximum load during a process in which a probe having a hemispherical head with the radius of curvature of 0.5 mm pierces the pressure-sensitive adhesive sheet at a travel speed of 0.2 mm/s. The pressure-sensitive adhesive sheet for build stage use is suitable for detachment of an object, which is formed on a build stage typically of an additive manufacturing apparatus, from the build stage while less causing the significant damage to the object.

A decorative object assembly for attachment to a vertical surface includes a substantially planar decorative block defining an upper edge and a lower edge. A flexible planar strip is made of a thermoplastic polymer, and defines an upper edge parallel to the upper edge of the block, a lower edge parallel to the lower edge of the block, and a vertical direction between the upper and lower edges. A first layer of adhesive extends vertically downward from the upper edge of the strip, for releasable attachment to the vertical surface. An attachment mechanism for attachment to the decorative block is configured on a lower vertical section of the planar strip. A gap section of the strip is vertically located between the first layer of adhesive and the lower vertical section, on which no adhesive is adhered.

Backing films for adhesive tapes are presented, as well as adhesive tapes comprising such backing films, which may include tapes used in construction such as seam sealing tapes, roofing tapes, and flashing tapes. The backing film comprises a core layer, a first skin layer, and optionally a second skin layer, where the backing film has a coefficient of thermal expansion of less than 90 ppm/ C. measured in at least one direction within the plane of the film, and, in some embodiments, a Young's modulus of less than 550 MPa as measured in at least one direction. In some embodiments, the backing film has a coefficient of thermal expansion of not more than 91.8 ppm/ C. and a Young's modulus of not more than 540 MPa as measured in any direction within the plane of the film. In some embodiments, the core layer comprises a polyolefin, and skin layers comprise a thermoplastic elastomer.

Backing films for adhesive tapes are presented, as well as adhesive tapes comprising such backing films, which may include tapes used in construction such as seam sealing tapes, roofing tapes, and flashing tapes. The backing film comprises a core layer, a first skin layer, and optionally a second skin layer, where the backing film has a coefficient of thermal expansion of less than 90 ppm/ C. measured in at least one direction within the plane of the film, and, in some embodiments, a Young's modulus of less than 550 MPa as measured in at least one direction. In some embodiments, the backing film has a coefficient of thermal expansion of not more than 91.8 ppm/ C. and a Young's modulus of not more than 540 MPa as measured in any direction within the plane of the film. In some embodiments, the core layer comprises a polyolefin, and skin layers comprise a thermoplastic elastomer.

A hot-melt adhesive composition comprises 35 wt % to 40 wt % of petroleum resin, 10 wt % to 14 wt % of polyester elastomer resin, 10 wt % to 14 wt % of ethylene vinyl acetate resin, 14 wt % to 19 wt % of polyether polyol, 15 wt % to 21 wt % of polyester polyol, 8 wt % to 10 wt % of methylene diphenyl diisocyanate, and 0.1 wt % to 0.5 wt % of an amine catalyst, wherein the hot-melt adhesive composition has a melt viscosity of 20,000 cps to 50,000 cps as measured at 150 C.