摘要:
A method for making an opacity relevant grade paper or paperboard product, such as a communication type paper used for printing and writing applications, utilizes an effective amount of quaternized alkanolamine fatty acid ester compounds as an opacification aid to control the optical properties of the paper or paperboard product as a wet-end additive to a papermaking operation. Using the quaternized alkanolamine fatty acid ester compound can improve the opacity of the paper or paperboard product, maintain the opacity of the paper while reducing the use of other opacification aids, such as inorganic fillers and/or pigments, and allow for a reduction in paper grammage without a compromise in opacity. The improvements in paper optical properties are achieved without adversely affecting other characteristics of the paper product such as bulk value, tensile strength, tear index, and the like.
摘要:
A generally non-transparent substrate is rendered substantially transparent, for example at a particular location or locations thereon, by electrostatically depositing finely divided transparentizing particles onto the substrate and then heating those particles to facilitate their flow into the intersticies of the substrate. The transparentizing particles have an optical refractive index that is substantially the same as that of the substrate, and these transparentizing particles have a melting point greater than that encountered during handling and storage and less than the temperature at which the substrate would be damaged.
摘要:
A composite sheet including a paper layer made of a wood pulp having a Canadian standard freeness value of 350 to 500 ml, a transparency improving layer provided over one side of the paper layer, and a release liner provided over the transparency improving layer. The composite sheet has a transmittance of at least 10 to 20% for a light with a wavelength of 940 to 960 nm and a bulk density of 0.90 to 1.15 g/cm3. A thermosensitive recording adhesive label sheet has the above composite sheet and a thermosensitive recording sheet provided on the composite sheet through an adhesive layer.
摘要翻译:一种复合片材,其包括加拿大标准游离度值为350-500ml的木浆制成的纸层,设置在纸层的一侧的透明度改善层,以及设置在透明度改善层上的剥离衬垫。 对于波长为940〜960nm,体积密度为0.90〜1.15g / cm 3的光,复合片材的透射率为10〜20%。 热敏记录粘合标签片具有上述复合片材和通过粘合剂层设置在复合片材上的热敏记录片材。