::EPS-上海嘉翰轻机::

	Home / Qquality
	Air-Laid Dust-Free Paper Standard

	Foreword This standard is formulated according to Q / RTZ001 - 1997( file no. QB6421011007 - 1997) dust-free paper enterprise standard of Ruite Paper Industry Co. Ltd., Wuzhong City, Ninghxia Mosslem People Autonomous Region and Q / SXZ001 - 2002( file no. : 371523Y0058) air-laid paper enterprise standard of Shandong Xincheng Paper Industry Co. Ltd., QB3529 - 1999 towel paper industry standard of the P.R.C. and wakelangfute product quality standard of Finland Combined Papermaking Co. Ltd. This standard is written according to GB / T1-1-1993, GB / T1.22- 1993 quoted standard and GB / 1.3 - 1997. This standard is prepared by Air-laid Paper Manufacturing Machinery Research Institute, Shanghai Jiahan Light Industry Machinery Co. Ltd., and entrusted by Pulping Papermaking Standard Committee, China Light Industry Head Quarters and Living Paper Committee, China Papermaking Association. This standard mainly drafted by: Pulping papermaking senior engineer: Huang Zhixiang Paper manufacturing machinery manufacturing engineer: Luo Xianli Pulping papermaking process engineers: Tian Xiaohui, Li Shengli, Bian Xiaojun and Cao Linrui Pulping papermaking inspection engineer: Huang Jianling Electrical auto control engineer: Xie Yibin This standard will be valid for three years since the date of issue and will be reviewed on the date of expiration. Q/JHZ001-2004 1. Scope This standard stipulates product category, technical requirements, test procedure, inspection rules and marks, package, transportation and storage of air-laid paper. This standard is applicable to living, medical treatment health, woman and children nursing and industrial air-laid paper products. This standard is also applicable to general paper products directly processed from air-laid paper. 2. Quoted standards The clauses included in the following standards are quoted in the standard to form the clauses of this standard. All versions are effective when the standard published. All standards may be revised; every party of using this standard shall discuss the possibility of applying the latest versions of the following standards. GB / T450-2002 paper and cardboard sampling GB / T451.1-2002 paper and cardboard size skewness mensuration GB / T451.2-2002 paper and cardboard quantification mensuration GB / T453-2002 paper and cardboard tensile strength mensuration (constant loading method) GB / T462-2002 paper and cardboard water content mensuration GB / T461.1-2002 paper and cardboard capillarity suction height mensuration (Klemm method) GB / T465.2-2002 mensuration of tensile strength after paper and cardboard soaked in water as time set GB1541-1989 paper and cardboard dirt mensuration GB2828- 89 check counting sampling procedure and sampling table batch by batch GB4789 - 89 food sanitation microbiological test GB / T8942-2002 paper softness mensuration GB8940.1 - 88 paper and cardboard whiteness mensuration (45 / 0 direct reflection method) GB / T10739 - 2002 standard atmosphere for paper pulp paper and paper sample treatment and testing GB15979-2002 one-time health aids sanitary standard QB3529-1999 paper towel standard 3. Product category 3.1 air-laid paper includes Two kinds: web or paperboard. Its specification, size deviation shall be measured according to GB / t451.1 - 2002 paper and cardboard skewness mensuration, and the measured deviation and skewness shall not exceed 3mm. 3.2 air-laid paper definition: three major types: glue paper, composite paper, heat bonding paper (water absorption core material cotton piece), it is also called as knurling or printing. Air-laid paper takes bleaching fuzz pulp as main material, utilizing air as a media to decentralize and transmit fiber in manufacturing process, making fiber form fiber web paper web on shaping web, and fiber bonding strength is generated due to mutual fiber binding after heating and melting of high molecule adhesive and (or) hot melt fiber. 3.2.1 glue paper. A fiber web paper web formed after paper breadth applied with adhesive, dried and solidified with bleaching fuzz pulp, adhesive as major raw materials. 3.2.2 heat bonding paper. It is formed through mutual fiber binding after hot melt fiber melted, with bleaching fuzz pulp and hot melt fiber as major raw materials, the strength of fiber web paper web. SAP can be added to become water absorption core material. 3.2.3 composite paper. A paper breadth formed by latices bonding and thermal bonding in fiber web paper web, and with bleaching fuzz pulp, hot melt fiber and adhesive as main materials. SAP can be added to become water absorption core material. 4. Technical requirements 4.1 technical indices of air-laid paper must conform to table 1. 4.2 paper surface clean, free of apparent dead fold, 2Dè±, damage, crushing, hard block or ???á, etc. 4.3 paper web shall trimed and smooth, in good order, free of crack, round edge, burr or page adhesion. 4.4 air-laid paper shall be free of off odor. 4.5 products can be divided into first quality, second quality, and the products exposed to the flowing cases shall be treated as second quality, but two items shall be not exceeded at the same time. Quantification exceeds permissible error, 2g / m2; Whiteness is below 0.2%( absolute value) specified; Eyelet exceeds 20% stipulated; Water-absorbing capacity less than 1 time specified; Transverse water absorption below 5mm specified; Softness exceeds 10% specified; Dirt exceeds 20% specified; 5 sample method: 5.1 treatment before sampling and inspection shall be implemented as per GB / T450 and GB / T10739; 5.2 quantification shall be measured as per GB / T451.2 - 2002; 5.3 specific performance and operating requirement of air-laid paper, thickness mensuration shall not adopt general wet process paper GB / T451.2 inspection standard; sample as per 5.1, separately measure with four layers or single layer as required, measurement requirements: according to specific area process, pressure at 10g / cm2, surface measurement disc is φ 50mm. Measuring tool precision 0.001mm. Measure 7 groups, remove maximal and minimal value, calculate average thickness value, then convert to single layer thickness, act as final measurement result. 5.4 whiteness shall be measured as per GB8940.1 (45 / 0 direct reflection process).

	5.5 water-absorbing capacity measured as per following method. Cut a ready sample into 10 pieces of 100 * 100mm2 size, place them into clean plastic bag pre-weighted, weigh on the scale, then take them out from the bag and vertically insert into a pond with clear water, make the upper edge of samples 25± 3mm below water surface and meanwhile guarantee that the samples fail to contact tank bottom, can also grip them with a clip, but the clipping end shall be within 5mm from the edge of samples. Soak for minutes, then vertically clip a corner of sample with a tweezer, take sample out of water and hold for 90s, dripping dry, reload it into the bag and weigh its mass, calculate the ratio between amount of water adsorbed and original mass. 5.6 transverse water absorption shall be measured with single layer air-laid paper sample as per GB / T461.1 - 2002 5.7 tensile strength measured as per GB / T453 - 2002, in case of doublelayer or multilayer testing, shall be converted to the measured value of single layer. 5.8 wet strength measured as per GB / T465.2 - 2002, before testing, the sample shall be baked in 80±1℃ oven, after thermal treatment, intermediate section of the sample shall be soaked into water, taken out after moisten, surface moisture sucked dry with filter paper, then, test result immediately converted to measured value of single layer. 5.9 softness mensuration shall conform to GB / T8942 - 2002. Sample size 100mm * 100mm measured, measured slot width 10mm. 5.10 aerobic bacteria count, pathogen, colibacillus shall be inspected as per GB15979 - 2002. 5.11 eyelet shall be measured as per following method. Hold and observe single layer paper, count the number of eyelets wihtin the specialized range, not less than 0.5m2 per sample, convert them to the number of eyelets in standard unit. 5.12 smell test method Take 1 100 * 100mm air-laid paper sample, soak it into beaker with 20?? distilled water for 2mim, then take out and smell within 60mm, and off odor shall be unavailable within this range. 5.13 dirt shall conform to GB1541. 5.14 visual check shall be conducted on the appearance of air-laid paper. 5.15 water content of air-laid paper shall be measured as per GB / T462 - 1989. 6. inspection rules 6.1 manufacturer shall guarantee products conform to this standard, take one delivery as one batch, but not more than 50 tons, and one qulity certificate shall be attached to every batch of products. 6.2 users shall be entitled to check quality of every batch against the standard, during acceptance inspection, shall firstly check external package, then implement sampling inspection, random inspection as per GB2828, and sample unit shall be package or reel. 6.3 treatment before sampling and inspection shall be implemented as per GB / T450 and GB / T10739 6.4 the sequence, check level, sampling inspection scheme and acceptable quality level( AQL) of inspection items shall subject to table 2, total bacterial count of every batch can be measured with 2-3 mixed samples, and its result shall satisfy the regulations of table 1. 6.5 objection, if any, for product quality, within three months after goods delivery, the user shall notify manufacturer for joint reinspection or entrust jointly agreed inspection department for reinspection, if failure to meet the standard, the product shall be treated as nonconformity, and shall be handled by the manufacturer.

	7. Mark, packaging, transportation, storage 7.1 air-laid paper product shall be sealed and packaged in plastic box or carton printed with specified trademark, end sealed orderly, firmly and free of damage. 7.2 package shall indicate manufacturer name, brand name, specification, registered trade mark, product approval no., weight, and external package shall conform to purchase contract. 7.3 air-laid paper shall be transported on transportation equipment clean and with hood to protect finished products against contamination. 7.4 air-laid paper shall be safely stored in a place, drying, clean and with good ventilation, so as to prevent rain, snow and moisture from influencing quality. 7.5 during handling, shall ensure package intact, never drop from high position, never damage external package and product. 7.6 product deterioration and other loss due to incorrect transportation, storage of products shipped shall be borne by the party responsible.