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Age resistance of cellulose products

Everything ages and some products need to retain their properties longer to live up to their area of ​​use. To be competitive, age resistance needs to be measured as a quality measure for a high-quality product.

Cause

Age resistance can be measured in many different ways depending on what the product is to be exposed to and what requirements there are from the buyer and the user. There are standardized methods, but it is also possible to develop methods according to wishes. Some instruments that are often used are these:

  • Climate chamber
  • Accelerating aging at different lights
  • Aging when freezing
  • Hysteresis

It is possible to measure very many properties during the aging process. Strengths and optical properties are common but it is possible to add others as well.

Method

Aging resistant paper (ISO 9706)

  • Neutral glue
  • pH value between 7.5 and 10.0
  • Have an alkali reserve of less than 0.4 moles of acid per kg of paper (less than 2% chalk or equivalent)
  • Have tear strength over 350 mN
  • Have kappa numbers less than 5, ie the paper may only contain a limited amount of oxidizable material (eg lignin)

Aging resistant paper (ISO 11108)

  • made from cotton, cotton linters, hemp or flax but may contain a small amount of fully bleached chemical pulp
  • Folding strength less than 2.18 (weight over 150)

Certificate

  • Age resistance for
  • Document paper
  • Archive paper
  • Color fastness
  • DIN 6738 Life span on paper and paper board
  • ICN

Deliveries

Report

Ordering

Orderer via contact person

Facts

Service

Age resistance of cellulose products secures the products

Innovation area

Biorefinery, Packaging, Pulp and paper

Delivery level

Non-accredited

Price

Price on tender

Delivery time

Analysis results are delivered by e-mail, normally within 15 working days of the samples arriving to us. With reservation for samples that require special treatment. Express analyzes can be obtained at extra cost by agreement.

Preparations

No preparation needed

Supports the UN sustainability goals

9. Industry, innovation and infrastructure
12. Responsible consumption and production

Contact person

Christina Wedin

Coordinator

Read more about Christina

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